#1
I need to find one or two Mastodon songs that it would be feasible to play and sing at the same time, and in standard tuning... Help please?
#2
Good luck, Brent Hinds' style seems to focus a lot on pedaling on open strings, making it harder to arrange a song for standard tuning.

Invert some chords and you might be able to pull of Naked Burn.
Q: Favourite Pink Floyd song?
A: The one where they get wicked high and play Emin and A for an hour.