Umphrey's McGee keyboardist Joel Cummins and lighting designer Jefferson Waful are featured in the latest episode of The JamBase Podcast. The interviews follow "The Rundown" opening segment in which hosts Scott Bernstein and Andy Kahn discuss AK's experience at this year's Summer Camp Music Festival. Next, Scotty sits with Joel Cummins for the debut installment of "Inside Improvisation," a segment diving deep into jamming. Cummins talks about his improvisational influences, the methods UM uses to improvise, how changes in the band's lineup brought an evolution to their jamming and additional topics. Finally, Scotty goes "All Access" with Jefferson Waful. Jefferson, who recently revealed he'll be retiring from the road at the end of the year, recalls how he got involved with the music industry. He also talks about his love of video production and hints at the decision to retire that would be made public a few months after the interview took place. Episode 38 of The JamBase Podcast is sponsored by Passion House Coffee Roasters.