Could anyone recommend me some? i hear bach is good for bass, but any others? Thanks.
Ave Maria, Für Elise, Moonlight Sonata, Boureé, Suite No. 1 in G major. Thats all I could think of right now.
Conklin GTBD-7
Digitech JamMan
Guitar Rig Mobile
Korg AX10B
Ride of Valkyries (Wagner), In the Hall of the Mountain King (Grieg) both sound great on Bass.

And of course you could always check out this book:

Stu Hamm has arranged a version of Moonlight Sonata for bass.