IOS 7.0.6 Music App Glithces?

Well I recently updated my iPhone to 7.0.6 and the first thing that happened was all my music was gone. Okay, I just redownloaded everything, but when I checked the album art on my j cole album changed to a picture of Wiz Khalifa. Now my music also lags a little when I unlock my screen and restarts the song. How can I fix this it is really annoying me.

Try backing up your phone and then restoring it.