diff --git a/src/main.cpp b/src/main.cpp
index aa15e8a..3a6d56e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -26,17 +26,22 @@ int main(int argc, char** argv) {
 		Camera::instance()->init();
 
 		AudioPlayer player(musicFile);
-		float* line = new float[1024];
+		float* line = new float[2048];
+		memset(line, 0, 2048);
 		player.setStreamListener([&mesh, line](float *data, std::size_t framesCount, std::size_t depth, std::size_t channels) {
-			// if we have more than one channel, take the first
-			if(channels > 1) {
+			memmove(line, line + 1024, 1024);
+			if(channels > 1) { // if we have more than one channel, use the first
 				for(std::size_t i = 0, j = 0; i < framesCount; i += channels, ++j) {
-					line[j] = data[i];
+					line[1024 + j] = data[i];
 				}
-				mesh.addLine(line, depth);
 			} else {
-				mesh.addLine(data, depth);
+				memcpy(line + 1024, data, 1024);
 			}
+
+			mesh.addLine(line, depth);
+			mesh.addLine(line + 256, depth);
+			mesh.addLine(line + 512, depth);
+			mesh.addLine(line + 768, depth);
 		});
 		player.play();