diff --git a/Tone/core/context/ToneAudioBuffer.test.ts b/Tone/core/context/ToneAudioBuffer.test.ts
index 3258ab32..e0b97636 100644
--- a/Tone/core/context/ToneAudioBuffer.test.ts
+++ b/Tone/core/context/ToneAudioBuffer.test.ts
@@ -117,6 +117,39 @@ describe("ToneAudioBuffer", () => {
 		});
 	});
 
+	context("baseUrl", () => {
+		afterEach(() => {
+			// reset baseUrl
+			ToneAudioBuffer.baseUrl = "";
+		});
+
+		it("can resolve a url without a baseUrl", async () => {
+			const buffer = new ToneAudioBuffer("./test/audio/sine.wav");
+			expect(buffer.loaded).to.be.false;
+			await ToneAudioBuffer.loaded();
+			expect(buffer.loaded).to.be.true;
+			expect(buffer.duration).to.be.closeTo(3, 0.01);
+		});
+
+		it("can resolve a url with a baseUrl", async () => {
+			ToneAudioBuffer.baseUrl = "./test/audio";
+			const buffer = new ToneAudioBuffer("sine.wav");
+			expect(buffer.loaded).to.be.false;
+			await ToneAudioBuffer.loaded();
+			expect(buffer.loaded).to.be.true;
+			expect(buffer.duration).to.be.closeTo(3, 0.01);
+		});
+
+		it("can resolve a url with a baseUrl that has a trailing slash", async () => {
+			ToneAudioBuffer.baseUrl = "./test/audio/";
+			const buffer = new ToneAudioBuffer("sine.wav");
+			expect(buffer.loaded).to.be.false;
+			await ToneAudioBuffer.loaded();
+			expect(buffer.loaded).to.be.true;
+			expect(buffer.duration).to.be.closeTo(3, 0.01);
+		});
+	});
+
 	context("loading", () => {
 		it("invokes the error callback if there is a problem with the file", (done) => {
 			const buffer = new ToneAudioBuffer(
@@ -141,20 +174,6 @@ describe("ToneAudioBuffer", () => {
 			expect(hadError).to.equal(true);
 		});
 
-		it("can load a file with fallback extensions", async () => {
-			const buffer = await ToneAudioBuffer.load(
-				"./test/audio/sine.[nope|nada|wav]"
-			);
-			expect(buffer).to.exist;
-		});
-
-		it("takes the first supported format when multiple extensions are provided", async () => {
-			const buffer = await ToneAudioBuffer.load(
-				"./test/audio/sine.[wav|nope]"
-			);
-			expect(buffer).to.exist;
-		});
-
 		it("instance .load method returns Promise", (done) => {
 			const promise = new ToneAudioBuffer().load(testFile);
 			expect(promise).to.have.property("then");
diff --git a/Tone/core/context/ToneAudioBuffer.ts b/Tone/core/context/ToneAudioBuffer.ts
index be983737..d9584f8f 100644
--- a/Tone/core/context/ToneAudioBuffer.ts
+++ b/Tone/core/context/ToneAudioBuffer.ts
@@ -372,20 +372,6 @@ export class ToneAudioBuffer extends Tone {
 	 * Loads a url using fetch and returns the AudioBuffer.
 	 */
 	static async load(url: string): Promise<AudioBuffer> {
-		// test if the url contains multiple extensions
-		const matches = url.match(/\[([^\]\[]+\|.+)\]$/);
-		if (matches) {
-			const extensions = matches[1].split("|");
-			let extension = extensions[0];
-			for (const ext of extensions) {
-				if (ToneAudioBuffer.supportsType(ext)) {
-					extension = ext;
-					break;
-				}
-			}
-			url = url.replace(matches[0], extension);
-		}
-
 		// make sure there is a slash between the baseUrl and the url
 		const baseUrl =
 			ToneAudioBuffer.baseUrl === "" ||
@@ -393,15 +379,7 @@ export class ToneAudioBuffer extends Tone {
 				? ToneAudioBuffer.baseUrl
 				: ToneAudioBuffer.baseUrl + "/";
 
-		// encode special characters in file path
-		const location = document.createElement("a");
-		location.href = baseUrl + url;
-		location.pathname = (location.pathname + location.hash)
-			.split("/")
-			.map(encodeURIComponent)
-			.join("/");
-
-		const response = await fetch(location.href);
+		const response = await fetch(baseUrl + url);
 		if (!response.ok) {
 			throw new Error(`could not load url: ${url}`);
 		}