ISFP: Chris Cornell,Tim Buckley, Avril Lavigne, Billy Joe Armstrong, Robert Smith, Freddie Mercury, Johnny Cash (maybe ISTP), Jimi Hendrix, Bob Marley, Micheal Jackson, Marvin Gaye (maybe INFP)
INFP: Jeff Buckley, Kurt Cobain, Nick Drake, Kate Bush, Brain Wilson (maybe INTP), Cat Stevens, Matisyahu, Sa Dingding (maybe ISFP), James Mercer, John Denver, Ben Gibbard
INTP: Peter Gabriel, Omar Rodriguez-Lopez, Maynard James Keenan, David Byrne, at least one member of Devo, at least one of the Beastie Boys (not sure which one)
INTJ: Trent Reznor
ENTP: Frank Zappa, Frank Black, Weird Al Yankovic,
ESFP: Dennis Wilson, Sam Cooke (maybe ESTP)
ESTP: Elvis Presley