Jukeboxes don't play their music on 19w02a

Hello Mojang,

I was testing snapshots and I wanted to hear the song "cat". I put it in the jukebox, waited, and nothing happened. I put other discs in there and still, nothing. Please fix this bug, because I really want to hear my favorite Minecraft song, but still want to sit around my campfire and not go back to 1.13.2.