Last weekend the Preservation Hall Jazz Band debuted the video for “That’s It!” the lead single from its recently released album of the same name. Recorded in Preservation Hall and produced by My Morning Jacket frontman Jim James and Hall proprietor, heir and sousaphone player Ben Jaffe, That’s It! marks the legendary ensemble first effort comprised completely of new material. The album itself was released in early July. Check out the video for “That’s It!” below as well as an entertaining, behind-the-scenes clip on the making of the album featuring candid interviews with James, Jaffe, venerated clarinetist Charlie Gabriel and more…