The Shadows are a legendary band, they wrote and covered many classic songs in the 50’s/60’s/70’s.

Beatles dedicated a song to them called: Cry for a Shadow (Shadows were all in all an underrated band).

I think these classics would be a joy to play and would be quite easy to author for pro guitar/bass.

Few choices I’d mention (there are far more hits obviously):

Apache:

Wonderful Land: http://www.youtube.com/watch?v=4j9fJbkzheY

Ghost Riders in the Sky:

For that matter Dick Dale’s Misirlou has been missing for far too long from the music games setlists.

Keep up the great work.