New Orleans is full of ad-hoc musical collectives that form and disperse according to circumstance, but not all of them feature Ivan Neville. The veteran singer and keyboard player formed Dumpstaphunk in 2003 to back him at the New Orleans Jazz & Heritage Festival, and the group has stuck around ever since. Dumpstaphunk today premieres the video for the song "Dancin to the Truth" on Speakeasy.

The band shot the live performance scenes during Mardi Gras this year at a local venue called the Howlin Wolf while preparing...