diff --git a/soundwave.cm b/soundwave.cm
index 7613162..7effa1f 100644
--- a/soundwave.cm
+++ b/soundwave.cm
@@ -202,7 +202,7 @@ soundwave.create = function(opts) {
       v = player.voices[i]
       done = v.stopped || (!v.loop && v.pos >= v.source.frames)
       if (!done) {
-        push(active, v)
+        active[] = v
       } else if (v.finish_hook) {
         v.finish_hook()
       }
@@ -228,7 +228,7 @@ soundwave.create = function(opts) {
       if (opts.vol != null) newvoice.vol = opts.vol
     }
     
-    push(player.voices, newvoice)
+    player.voices[] = newvoice
     return newvoice
   }
   
@@ -248,8 +248,8 @@ soundwave.create = function(opts) {
       if (v.stopped) continue
       chunk = pull_voice_chunk(v, nframes)
       if (chunk) {
-        push(blobs, chunk)
-        push(vols, v.vol)
+        blobs[] = chunk
+        vols[] = v.vol
       }
     }