Can anyone recommend an Android music app that has the following attributes?

I am unhappy with the various music players on the Android Play Store; they’re almost all Album or Artist based.

Here are my absolute requirements:

1) plays random songs I don’t want to have to choose album or artist or anything else. I want it to pick from my music library randomly and unpredictably.

2) has a sleep timer so that I can fall asleep to music and have the app turn itself off an hour later.

Any personal recommendations? (I can read the descriptions in Play Store just like you can. I’m really hoping for your experiential reviews.)