We all love being at a concert and hearing the band say they want to invite a friend out to play with them. Here are another twelve examples of some of those special occasions in the Vault.
1) As far as I'm aware, when Warren Haynes (who was then performing in David Allan Coe's band) stepped onto the stage with Dickey Betts at this show, the King Biscuit Flower Hour captured the first recording of the two guitarists playing together.
2) While opening for BB King, Booker T. Jones invited Albert King up from the audience to sit in. They had worked together before in the studio so they're jamming was tight...or maybe it was tight because the MGs were one of the best rhythm sections ever.
3) Tom Petty goes country for this tune with help from British violinist/singer Bobby Valentino.
4) The audio mix isn't that great on this one, but it's good enough to hear Dizzy Gillespie's trumpet and James Moody's saxophone blowing lines in and out of this blues romp.
5) Carole King joins JT on piano and vocals for this number. Around the 2:35 mark, the two sing together.
6) This is not "Country Road," it's the Grateful Dead's "Ripple." But it probably wouldn't matter to Jeff Tweedy - he's pretty much making up the words as he goes along anyway.
7) Speaking of not knowing the words...Bob Weir must have taught this one to Ramblin' Jack many, many, many years ago. I love these examples of completely off-the-cuff, unrehearsed recordings; the spontaneity is so much more enjoyable than nailing the lyrics.
8) Blues stud Robert Cray is leading the Fabulous Thunderbirds through "The Crawl" here; earlier in the set, the band played tunes with Bonnie Raitt, Dave Edmunds and Nick Lowe.
9) Recorded shortly before Bill Graham's death, Blues Traveler included this outstanding jam with Calos Santana on a live EP they released in Graham's honor.
10) At the 10th anniversary Woodstock concert, Jorma Kaukonen played two final numbers with Stephen Stills and Mountain's Leslie West. As JK mentions, he's n