Musical Montage

Jeffster often steps in as the cover band for a musical montage. See how your knowledge stacks up.

Q.1
Which of these episodes does not feature a Jeffster montage?

Q.2
In which episode does Jeffster go unplugged?

Q.3
Of all Jeffster's gigs, there is only one that is pre-arranged and could be a paying gig. In which episode does Jeffster get paid (maybe)?