How about a spoiler, instead of a PM? That way the next person can peek at the answer, or try to solve it themselves.
The band is Rare Earth (uncommon turf) who used to be called the Sunliners, and they sing I Just Want to Celebrate, which was covered by Bob and Larry in the Veggietales CD: Bob and Larry sing the 70's
Here we go for the next one!
This band contains a Dr. and a Pepper.
Mac Rebbenak was the inspiration for the lead singer.
They sing Sam's Song when Superman is around.