Broken Pocket Edition Music Discs

I was building in a world of mine and decided, "why not set up a music system?"  I knew how to make a basic one, with a hopper and a jukebox, so I built it.  I put the Pigstep disc inside, it showed the thing at the bottom of the screen that told me which disc was playing, but I heard no sound.  I made sure my volume was up, it was, I took out my headphones and made sure the volume was up, but again, no Pigstep.  Other sounds, like animal sounds, block placing, block breaking, tripwire hooks, and even my text-to-speech chat reader were working.  I went into the nether, but still, no sound.  PLEASE, FOR THE LOVE OF GOD, HELP ME.