diff --git a/orx-fcurve/src/commonMain/kotlin/CompoundFCurve.kt b/orx-fcurve/src/commonMain/kotlin/CompoundFCurve.kt
index e7be4821..ddb154f0 100644
--- a/orx-fcurve/src/commonMain/kotlin/CompoundFCurve.kt
+++ b/orx-fcurve/src/commonMain/kotlin/CompoundFCurve.kt
@@ -3,41 +3,75 @@ package org.openrndr.extra.fcurve
 import org.openrndr.color.ColorRGBa
 import org.openrndr.math.*
 
-abstract class CompoundFCurve<T>(val compounds: List<FCurve?>) {
+abstract class CompoundFCurve<T>(val compounds: List<FCurve?>, val compoundNames: List<String>) {
     val duration: Double
         get() {
             return compounds.maxOf { it?.duration ?: 0.0 }
         }
 
+    abstract fun value(t: Double, overrides: Map<String, Double>? = null): T
     abstract fun sampler(normalized: Boolean = false): (Double) -> T
 }
 
-class BooleanFCurve(value: FCurve?, val default: Boolean = true) :
-    CompoundFCurve<Boolean>(listOf(value)) {
+class BooleanFCurve(value: Pair<String, FCurve?>, val default: Boolean = true) :
+    CompoundFCurve<Boolean>(listOf(value.second), listOf(value.first)) {
+    override fun value(t: Double, overrides: Map<String, Double>?): Boolean {
+        val d = overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t)
+        return if (d != null) {
+            d >= 1.0
+        } else {
+            default
+        }
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> Boolean {
         val sampler = compounds[0]?.sampler(normalized) ?: { if (default) 1.0 else 0.0 }
         return { t -> sampler(t) >= 1.0 }
     }
 }
 
-class DoubleFCurve(value: FCurve?, val default: Double = 0.0) :
-    CompoundFCurve<Double>(listOf(value)) {
+class DoubleFCurve(value: Pair<String, FCurve?>, val default: Double = 0.0) :
+    CompoundFCurve<Double>(listOf(value.second), listOf(value.first)) {
+
+    override fun value(t: Double, overrides: Map<String, Double>?): Double {
+        return overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t) ?: default
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> Double {
         val sampler = compounds[0]?.sampler(normalized) ?: { default }
         return { t -> sampler(t) }
     }
 }
 
-class IntFCurve(value: FCurve?, val default: Int = 0) :
-    CompoundFCurve<Int>(listOf(value)) {
+class IntFCurve(value: Pair<String, FCurve?>, val default: Int = 0) :
+    CompoundFCurve<Int>(listOf(value.second), listOf(value.first)) {
+
+    override fun value(t: Double, overrides: Map<String, Double>?): Int {
+        val d = overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t)
+        return if (d != null) {
+            d.toInt()
+        } else {
+            default
+        }
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> Int {
         val sampler = compounds[0]?.sampler(normalized) ?: { default.toDouble() }
         return { t -> sampler(t).toInt() }
     }
 }
 
-class Vector2FCurve(x: FCurve?, y: FCurve?, val default: Vector2 = Vector2.ZERO) :
-    CompoundFCurve<Vector2>(listOf(x, y)) {
+class Vector2FCurve(
+    x: Pair<String, FCurve?>, y: Pair<String, FCurve?>,
+    val default: Vector2 = Vector2.ZERO
+) :
+    CompoundFCurve<Vector2>(listOf(x.second, y.second), listOf(x.first, y.first)) {
+    override fun value(t: Double, overrides: Map<String, Double>?): Vector2 {
+        val x = overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t) ?: default.x
+        val y = overrides?.get(compoundNames[1]) ?: compounds[1]?.value(t) ?: default.y
+        return Vector2(x, y)
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> Vector2 {
         val xSampler = compounds[0]?.sampler(normalized) ?: { default.x }
         val ySampler = compounds[1]?.sampler(normalized) ?: { default.y }
@@ -45,8 +79,20 @@ class Vector2FCurve(x: FCurve?, y: FCurve?, val default: Vector2 = Vector2.ZERO)
     }
 }
 
-class Vector3FCurve(x: FCurve?, y: FCurve?, z: FCurve?, val default: Vector3 = Vector3.ZERO) :
-    CompoundFCurve<Vector3>(listOf(x, y, z)) {
+class Vector3FCurve(
+    x: Pair<String, FCurve?>,
+    y: Pair<String, FCurve?>,
+    z: Pair<String, FCurve?>,
+    val default: Vector3 = Vector3.ZERO
+) :
+    CompoundFCurve<Vector3>(listOf(x.second, y.second, z.second), listOf(x.first, y.first, z.first)) {
+    override fun value(t: Double, overrides: Map<String, Double>?): Vector3 {
+        val x = overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t) ?: default.x
+        val y = overrides?.get(compoundNames[1]) ?: compounds[1]?.value(t) ?: default.y
+        val z = overrides?.get(compoundNames[2]) ?: compounds[2]?.value(t) ?: default.z
+        return Vector3(x, y, z)
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> Vector3 {
         val xSampler = compounds[0]?.sampler(normalized) ?: { default.x }
         val ySampler = compounds[1]?.sampler(normalized) ?: { default.y }
@@ -55,8 +101,26 @@ class Vector3FCurve(x: FCurve?, y: FCurve?, z: FCurve?, val default: Vector3 = V
     }
 }
 
-class Vector4FCurve(x: FCurve?, y: FCurve?, z: FCurve?, w: FCurve?, val default: Vector4 = Vector4.ZERO) :
-    CompoundFCurve<Vector4>(listOf(x, y, z, w)) {
+class Vector4FCurve(
+    x: Pair<String, FCurve?>,
+    y: Pair<String, FCurve?>,
+    z: Pair<String, FCurve?>,
+    w: Pair<String, FCurve?>,
+    val default: Vector4 = Vector4.ZERO
+) :
+    CompoundFCurve<Vector4>(
+        listOf(x.second, y.second, z.second, w.second),
+        listOf(x.first, y.first, z.first, w.first)
+    ) {
+
+    override fun value(t: Double, overrides: Map<String, Double>?): Vector4 {
+        val x = overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t) ?: default.x
+        val y = overrides?.get(compoundNames[1]) ?: compounds[1]?.value(t) ?: default.y
+        val z = overrides?.get(compoundNames[2]) ?: compounds[2]?.value(t) ?: default.z
+        val w = overrides?.get(compoundNames[3]) ?: compounds[3]?.value(t) ?: default.w
+        return Vector4(x, y, z, w)
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> Vector4 {
         val xSampler = compounds[0]?.sampler(normalized) ?: { default.x }
         val ySampler = compounds[1]?.sampler(normalized) ?: { default.y }
@@ -66,8 +130,21 @@ class Vector4FCurve(x: FCurve?, y: FCurve?, z: FCurve?, w: FCurve?, val default:
     }
 }
 
-class RgbFCurve(r: FCurve?, g: FCurve?, b: FCurve?, val default: ColorRGBa = ColorRGBa.WHITE) :
-    CompoundFCurve<ColorRGBa>(listOf(r, g, b)) {
+class RgbFCurve(
+    r: Pair<String, FCurve?>,
+    g: Pair<String, FCurve?>,
+    b: Pair<String, FCurve?>,
+    val default: ColorRGBa = ColorRGBa.WHITE
+) :
+    CompoundFCurve<ColorRGBa>(listOf(r.second, g.second, b.second), listOf(r.first, g.first, b.first)) {
+
+    override fun value(t: Double, overrides: Map<String, Double>?): ColorRGBa {
+        val r = overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t) ?: default.r
+        val g = overrides?.get(compoundNames[1]) ?: compounds[1]?.value(t) ?: default.g
+        val b = overrides?.get(compoundNames[2]) ?: compounds[2]?.value(t) ?: default.g
+        return ColorRGBa(r, g, b)
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> ColorRGBa {
         val rSampler = compounds[0]?.sampler(normalized) ?: { default.r }
         val gSampler = compounds[1]?.sampler(normalized) ?: { default.g }
@@ -76,8 +153,26 @@ class RgbFCurve(r: FCurve?, g: FCurve?, b: FCurve?, val default: ColorRGBa = Col
     }
 }
 
-class RgbaFCurve(r: FCurve?, g: FCurve?, b: FCurve?, a: FCurve?, val default: ColorRGBa = ColorRGBa.WHITE) :
-    CompoundFCurve<ColorRGBa>(listOf(r, g, b, a)) {
+class RgbaFCurve(
+    r: Pair<String, FCurve?>,
+    g: Pair<String, FCurve?>,
+    b: Pair<String, FCurve?>,
+    a: Pair<String, FCurve?>,
+    val default: ColorRGBa = ColorRGBa.WHITE
+) :
+    CompoundFCurve<ColorRGBa>(
+        listOf(r.second, g.second, b.second, a.second),
+        listOf(r.first, g.first, b.first, a.first)
+    ) {
+
+    override fun value(t: Double, overrides: Map<String, Double>?): ColorRGBa {
+        val r = overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t) ?: default.r
+        val g = overrides?.get(compoundNames[1]) ?: compounds[1]?.value(t) ?: default.g
+        val b = overrides?.get(compoundNames[2]) ?: compounds[2]?.value(t) ?: default.g
+        val a = overrides?.get(compoundNames[3]) ?: compounds[3]?.value(t) ?: default.alpha
+        return ColorRGBa(r, g, b, a)
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> ColorRGBa {
         val rSampler = compounds[0]?.sampler(normalized) ?: { default.r }
         val gSampler = compounds[1]?.sampler(normalized) ?: { default.g }
@@ -87,8 +182,19 @@ class RgbaFCurve(r: FCurve?, g: FCurve?, b: FCurve?, a: FCurve?, val default: Co
     }
 }
 
-class PolarFCurve(angleInDegrees: FCurve?, radius: FCurve?, val default: Polar = Polar(0.0, 1.0)) :
-    CompoundFCurve<Polar>(listOf(angleInDegrees, radius)) {
+class PolarFCurve(
+    angleInDegrees: Pair<String, FCurve?>,
+    radius: Pair<String, FCurve?>,
+    val default: Polar = Polar(0.0, 1.0)
+) :
+    CompoundFCurve<Polar>(listOf(angleInDegrees.second, radius.second), listOf(angleInDegrees.first, radius.first)) {
+
+    override fun value(t: Double, overrides: Map<String, Double>?): Polar {
+        val theta = overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t) ?: default.theta
+        val radius = overrides?.get(compoundNames[1]) ?: compounds[1]?.value(t) ?: default.radius
+        return Polar(theta, radius)
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> Polar {
         val angleSampler = compounds[0]?.sampler(normalized) ?: { default.theta }
         val radiusSampler = compounds[1]?.sampler(normalized) ?: { default.radius }
@@ -97,12 +203,22 @@ class PolarFCurve(angleInDegrees: FCurve?, radius: FCurve?, val default: Polar =
 }
 
 class SphericalFCurve(
-    thetaInDegrees: FCurve?,
-    phiInDegrees: FCurve?,
-    radius: FCurve?,
+    thetaInDegrees: Pair<String, FCurve?>,
+    phiInDegrees: Pair<String, FCurve?>,
+    radius: Pair<String, FCurve?>,
     val default: Spherical = Spherical(0.0, 1.0, 1.0)
 ) :
-    CompoundFCurve<Spherical>(listOf(thetaInDegrees, phiInDegrees, radius)) {
+    CompoundFCurve<Spherical>(
+        listOf(thetaInDegrees.second, phiInDegrees.second, radius.second),
+        listOf(thetaInDegrees.first, phiInDegrees.first, radius.first)
+    ) {
+    override fun value(t: Double, overrides: Map<String, Double>?): Spherical {
+        val theta = overrides?.get(compoundNames[0]) ?: compounds[0]?.value(t) ?: default.theta
+        val phi = overrides?.get(compoundNames[1]) ?: compounds[1]?.value(t) ?: default.phi
+        val radius = overrides?.get(compoundNames[2]) ?: compounds[2]?.value(t) ?: default.radius
+        return Spherical(theta, phi, radius)
+    }
+
     override fun sampler(normalized: Boolean): (Double) -> Spherical {
         val thetaSampler = compounds[0]?.sampler(normalized) ?: { default.theta }
         val phiSampler = compounds[0]?.sampler(normalized) ?: { default.theta }
diff --git a/orx-fcurve/src/commonMain/kotlin/MultiFCurveExtensions.kt b/orx-fcurve/src/commonMain/kotlin/MultiFCurveExtensions.kt
index 545684c8..96bfc4e5 100644
--- a/orx-fcurve/src/commonMain/kotlin/MultiFCurveExtensions.kt
+++ b/orx-fcurve/src/commonMain/kotlin/MultiFCurveExtensions.kt
@@ -3,32 +3,37 @@ package org.openrndr.extra.fcurve
 import org.openrndr.color.ColorRGBa
 import org.openrndr.math.*
 
-fun MultiFCurve.boolean(value: String, default: Boolean = true) = BooleanFCurve(this[value], default)
-fun MultiFCurve.double(value: String, default: Double = 0.0) = DoubleFCurve(this[value], default)
+fun MultiFCurve.boolean(value: String, default: Boolean = true) = BooleanFCurve(value to this[value], default)
+fun MultiFCurve.double(value: String, default: Double = 0.0) = DoubleFCurve(value to this[value], default)
 
-fun MultiFCurve.int(value: String, default: Int = 0) = IntFCurve(this[value], default)
+fun MultiFCurve.int(value: String, default: Int = 0) = IntFCurve(value to this[value], default)
 
 fun MultiFCurve.vector2(x: String, y: String, default: Vector2 = Vector2.ZERO) =
-    Vector2FCurve(this[x], this[y], default)
+    Vector2FCurve(x to this[x], y to this[y], default)
 
 fun MultiFCurve.vector3(x: String, y: String, z: String, default: Vector3 = Vector3.ZERO) =
-    Vector3FCurve(this[x], this[y], this[z], default)
+    Vector3FCurve(x to this[x], y to this[y], z to this[z], default)
 
 fun MultiFCurve.vector4(x: String, y: String, z: String, w: String, default: Vector4 = Vector4.ZERO) =
-    Vector4FCurve(this[x], this[y], this[z], this[w], default)
+    Vector4FCurve(x to this[x], y to this[y], z to this[z], w to this[w], default)
 
 fun MultiFCurve.rgb(r: String, g: String, b: String, default: ColorRGBa = ColorRGBa.WHITE) =
-    RgbFCurve(this[r], this[g], this[b], default)
+    RgbFCurve(r to this[r], g to this[g], b to this[b], default)
 
 fun MultiFCurve.rgba(r: String, g: String, b: String, a: String, default: ColorRGBa = ColorRGBa.WHITE) =
-    RgbaFCurve(this[r], this[g], this[b], this[a], default)
+    RgbaFCurve(r to this[r], g to this[g], b to this[b], a to this[a], default)
 
 fun MultiFCurve.polar(angleInDegrees: String, radius: String, default: Polar = Polar(0.0, 1.0)) =
-    PolarFCurve(this[angleInDegrees], this[radius], default)
+    PolarFCurve(angleInDegrees to this[angleInDegrees], radius to this[radius], default)
 
 fun MultiFCurve.spherical(
     thetaInDegrees: String,
     phiInDegrees: String,
     radius: String,
     default: Spherical = Spherical(0.0, 0.0, 1.0)
-) = SphericalFCurve(this[thetaInDegrees], this[phiInDegrees], this[radius], default)
\ No newline at end of file
+) = SphericalFCurve(
+    thetaInDegrees to this[thetaInDegrees],
+    phiInDegrees to this[phiInDegrees],
+    radius to this[radius],
+    default
+)
\ No newline at end of file