The cool factor- who has it?


My question relates to music and musical artist's performance and music. Who has that COOL factor?  In the past or currently. For example I think the Beatles had it and also Bob Marley. Today I think Lenny Kravitz (if for nothing certainly for his longevity).

Thoughts?...

2psyop
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@slaw - I used to know Alejandro from the Mabuhay Gardens punk club in San Francisco in the 70's, and he was playing bass with the Nuns, one of the earliest SF punk bands. He was one of the nicest, friendliest people; no 'attitude'. 

@larsman . I saw him on "The Crossing" tour. He was such a cool guy,  unpretentious.

I would add Dexter Gordon and Molly Tuttle….and David Grisman….Max Roach was Waaaaayyyy cool…