Releasing a live double album may sound like a quaint marketing throwback suited more to the early careers of KISS or Peter Frampton, but the shaggy-haired guitar heroes in Kentucky-based My Morning Jacket are ideal candidates for live documentation. Okonokos, a concert captured on both DVD and CD that the band released late last year, amplifies the reasons why their live performances are enchanting and invigorating experiences rightfully worthy of comparison to Radiohead or the Flaming Lips. (Moore Theatre, 1932 Second Ave, 292-2787. 8 pm, $25, all ages.)