There's no lovely Minecraft music. I played for a few hours thinking something was off, something I couldn't quite put my finger on. Until I was watching the sunset in my world and there was no music - from what I've noticed, music tends to occur at sun-up, midday and and sun-down.  I've tried playing a juke box in my creative world and that worked fine. Just not getting any ambient music as I normally would. 

By-the-bye, I couldn't tell you if the creative world ambient music works, I only went into that world for two mins to check if the juke box was still working