An unbelievably difficult trivia question

[SCJoniGuy]

I've had They Might Be Giants (the band, not the film) on the brain for awhile, and in 
the midst of connecting them to Joni discovered at least two different songwriters 
that have been covered by both Joni & TMBG. Anyone who can figure out 2 different 
songwriters that have been covered by both Joni & They Might Be Giants can pick a 
prize from my treasure chest o' Joni!

On another note, why do I even think about shit like this? ;~)

Bob

NP: Tuck & Patti, "Hold Out, Hold Up, and Hold On"