Some friends and I are starting an acoustic instrumental side project, which will consist of two acoustic guitarists, me (the bassist, of course), a drummer, and a mandolin/banjo player. The mandolin/banjo dude will play vocal melodies on the mandolin or banjo. We plan on creating several full sets of different genres of music so we can play with virtually any band. Right now, we're concentrating on all-metal and all-country sets. I've been tasked to come up with two cover songs. Any suggestions?