So what is the best Band or Artist you know off that can cater to the lowest common denominator.
Mainly something everything everyone can be okay with.

For me personally it has started to become Bruno Mars and Mark Ronson. Especially the funk that is being rejuvenated again by them from songs like Up Town Funk. Got me into listening to Kool and the Gang, as well as Earth Wind and Fire.

So what is your favorite Mainstream Band/Artist?

U2