Here's a supergroup in the making: At Neil Finn's concert to celebrate his Oxfam-supporting album, 7 Worlds Collide, Jeff Tweedy hopped onstage to do a cover of Radiohead's "Fake Plastic Trees." That, in and of itself, makes this clip blog-worthy, but Tweedy was joined in the performance by Johnny Marr (he of the Smiths) and Phil Selway (drums) and Ed O'Brien (guitar) of Radiohead. The video and sound isn't so great, but that the performance exists, and that this many indie rock luminaries could perform together, is good enough. [You Ain't No Picasso]