I'll list my favourites as they come to mind rather than number them since I sometimes prefer one group/singer over another at a given time.

1)Classic: Pink Floyd, Led Zep, Beatles, Stones('73 or earlier), Moody Blues, Elton John(pre-powder blue jumpsuite era)

**Honourable Mention: Doors, Rush, Foreigner, SRV, Supertramp

2)Easy on thy ears: Eagles, Neil Young(older stuff), Loreena McKennitt, Gordon Lightfoot, Fleetwood Mac

**Honourable Mention: Norah Jones, Leonard Cohen

3)Grungie stuff: Pearl Jam, Our Lady Peace, Live

**Honourable Mention: Nirvana

Half of communication is listening. You can't listen with your mouth.