I consider this an instrumental, but it may be disqualified as it occasionally has vocal loops but I've loved it since I heard it as a kid:
And I can't find a copy of them on youtube but there are two from Jimi Hendrix's MCA Box set that I love:
On Disc 2 - Bold as Love
On Disc 4 - Slow Blues (according to the liner notes this comes from the last studio set he ever taped)
And a little honorable mention because I love Jimi so much from the Live at the Fillmore Set Auld Lang Syne: