Editors' Review for Audiocloud
Audiocloud allows background play so you can play music while playing games. It's so smooth to use never skips lags or even crashes like the original Soundcloud app does.
You must have a Soundcloud account, if you don't you can make one. This app is a third-party implementation of the SoundCloud API, so not all tracks are available for listening and internet connection is required due to third-party app restrictions.