I would suggest the unknown cover is Riff Raff, and where you've got Riff Raff they actually did Whole Lotta Rosie. Both AC/DC covers, obviously.
Good to see yet another person actually able to watch a GN'R show for the great show it is.
29/5 Dylan Moran
3-6/6 Sweden Rock Festival
19-21/6 Graspop Metal Meeting