diff --git a/CHANGELOG.md b/CHANGELOG.md
index 403599bd..11ffd69e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.6.7] - 2022-01-03
+
+### Fixed
+
+- Changes the definition of `isOn` to both `on` and `offOn`, smoothing out the switching on of buffers and oscillators.
+
+## [0.6.6] - 2022-01-02
+
+### Added
+
+- Simplifies rendering algorithm in `Run.purs`.
+
 ## [0.6.5] - 2022-01-02
 
 ### Added
diff --git a/package.json b/package.json
index 0d8306cf..de8fcdd6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "purescript-wags",
-  "version": "0.6.6",
+  "version": "0.6.7",
   "description": "Web Audio Graphs as a Stream",
   "scripts": {
     "build": "spago build",
diff --git a/src/WAGS/Interpret.js b/src/WAGS/Interpret.js
index 77cd9e7d..eb2e6711 100644
--- a/src/WAGS/Interpret.js
+++ b/src/WAGS/Interpret.js
@@ -11,7 +11,10 @@ exports.contextResume = function (audioCtx) {
 		return audioCtx.resume();
 	};
 };
-function makeid(length) {
+var isOn = function(param) {
+	return param === "on" || param === "offOn";
+}
+var makeid = function(length) {
 	var result = "";
 	var characters =
 		"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
@@ -328,10 +331,10 @@ exports.makeConstant_ = function (ptr) {
 						main: createFunction(),
 					};
 					applyResumeClosure(state.units[ptr]);
-					if (onOff.param === "on") {
+					if (isOn(onOff.param)) {
 						state.units[ptr].main.start(state.writeHead + onOff.timeOffset);
 					}
-					state.units[ptr].onOff = onOff.param === "on";
+					state.units[ptr].onOff = isOn(onOff.param);
 				};
 			};
 		};
@@ -503,14 +506,14 @@ exports.makeLoopBuf_ = function (ptr) {
 									},
 									main: createFunction(),
 								};
-								if (onOff.param === "on") {
+								if (isOn(onOff.param)) {
 									applyResumeClosure(state.units[ptr]);
 									state.units[ptr].main.start(
 										state.writeHead + onOff.timeOffset,
 										c
 									);
 								}
-								state.units[ptr].onOff = onOff.param === "on";
+								state.units[ptr].onOff = isOn(onOff.param);
 							};
 						};
 					};
@@ -667,10 +670,10 @@ exports.makePeriodicOsc_ = function (ptr) {
 							main: createFunction(),
 						};
 						applyResumeClosure(state.units[ptr]);
-						if (onOff.param === "on") {
+						if (isOn(onOff.param)) {
 							state.units[ptr].main.start(state.writeHead + onOff.timeOffset);
 						}
-						state.units[ptr].onOff = onOff.param === "on";
+						state.units[ptr].onOff = isOn(onOff.param);
 					};
 				};
 			};
@@ -704,10 +707,10 @@ exports.makePeriodicOscV_ = function (ptr) {
 							main: createFunction(),
 						};
 						applyResumeClosure(state.units[ptr]);
-						if (onOff.param === "on") {
+						if (isOn(onOff.param)) {
 							state.units[ptr].main.start(state.writeHead + onOff.timeOffset);
 						}
-						state.units[ptr].onOff = onOff.param === "on";
+						state.units[ptr].onOff = isOn(onOff.param);
 					};
 				};
 			};
@@ -907,14 +910,14 @@ exports.makePlayBuf_ = function (ptr) {
 								},
 								main: createFunction(),
 							};
-							if (onOff.param === "on") {
+							if (isOn(onOff.param)) {
 								applyResumeClosure(state.units[ptr]);
 								state.units[ptr].main.start(
 									state.writeHead + onOff.timeOffset,
 									b
 								);
 							}
-							state.units[ptr].onOff = onOff.param === "on";
+							state.units[ptr].onOff = isOn(onOff.param);
 						};
 					};
 				};
@@ -983,10 +986,10 @@ exports.makeSawtoothOsc_ = function (ptr) {
 						main: createFunction(),
 					};
 					applyResumeClosure(state.units[ptr]);
-					if (onOff.param === "on") {
+					if (isOn(onOff.param)) {
 						state.units[ptr].main.start(state.writeHead + onOff.timeOffset);
 					}
-					state.units[ptr].onOff = onOff.param === "on";
+					state.units[ptr].onOff = isOn(onOff.param);
 				};
 			};
 		};
@@ -1014,10 +1017,10 @@ exports.makeSinOsc_ = function (ptr) {
 						main: createFunction(),
 					};
 					applyResumeClosure(state.units[ptr]);
-					if (onOff.param === "on") {
+					if (isOn(onOff.param)) {
 						state.units[ptr].main.start(state.writeHead + onOff.timeOffset);
 					}
-					state.units[ptr].onOff = onOff.param === "on";
+					state.units[ptr].onOff = isOn(onOff.param);
 				};
 			};
 		};
@@ -1056,10 +1059,10 @@ exports.makeSquareOsc_ = function (ptr) {
 						main: createFunction(),
 					};
 					applyResumeClosure(state.units[ptr]);
-					if (onOff.param === "on") {
+					if (isOn(onOff.param)) {
 						state.units[ptr].main.start(state.writeHead + onOff.timeOffset);
 					}
-					state.units[ptr].onOff = onOff.param === "on";
+					state.units[ptr].onOff = isOn(onOff.param);
 				};
 			};
 		};
@@ -1101,10 +1104,10 @@ exports.makeTriangleOsc_ = function (ptr) {
 						main: createFunction(),
 					};
 					applyResumeClosure(state.units[ptr]);
-					if (onOff.param === "on") {
+					if (isOn(onOff.param)) {
 						state.units[ptr].main.start(state.writeHead + onOff.timeOffset);
 					}
-					state.units[ptr].onOff = onOff.param === "on";
+					state.units[ptr].onOff = isOn(onOff.param);
 				};
 			};
 		};