The fact that you haven't played together before doesn't matter , it's more about the skills of each one of you individualy ... Some songs can be so easy for the guitarist ,and kills your drummer at the same time .

An easy choice would certainly be Nirvana , not to mention that you can get very nice audience response with these.

Metallica- For Whom The Bell Tolls .... Anybody can play that in a concert , without any previous rehearsal.