Dave Grohl covered many bands, and played many alternate versions of his songs.
There are also a lot of side projects like Probot.

Taylor Hawkins & The Coattail Riders [2006]

01. Louise
02. Walking Away
03. Running In Place
04. NOA
05. It's OK Now
06. End Of The Line
07. You Drive Me Insane
08. Wasted Energy
09. Get Up I Want To Get Down
10. Pitiful
11. Better You Than Me
12. Perfect Day (Hidden)
Half As Much (Unreleased)
Lollipop (Unreleased)