"Favorite bands (in no specific order): Yes, The Police, Bruce Springsteen, Jethro Tull, The Beatles, Genesis (mostly after And Then There Were Three), Ray Charles, Creedence Clearwater Revival [CCR], Billy Joel, and Collective Soul." Copied from my bio (because I don't feel like doing that again).
There are just too many to list as far as bands go. Ditto for singers. I will say I'm developing an interest in Bob Dylan that I never had before. Another singer I will not mention here even though I have mentioned the name before is because even though many have heard of the name of this individual, this individuals music, and the band that played with this person, developing a fascination with this character could be detrimental to one's mental health if one really "digs" into this singer and reads about the singer's background, and what/who/how this singer was influenced, then delves into those influences themselves.