VIDEO: Jack White, Alison Mosshart and John Paul Jones onstage with Seasick Steve at iTunes Festival

Performing at the iTunes Festival at Camden's Roundhouse this weekend, Seasick Steve was joined onstage by Jack White and his Dead Weather bandmate/Kills front-lady, Alison Mosshart. John Paul Jones rounded off the supergroup on bass.

Check out the video above to watch the foursome perform Seasick Steve's Write Me A Few Of Your Lines with White on drums and Mosshart on vocals.