One of the most talked-about highlights in the wake of the annual Summer Camp Music Festival this Memorial Day has been groove rock quartet Aqueous‘s Thursday, 5/25 sunset performance. The set was the first of two full-band slots over the course of the festival (guitarist Mike Gantzer also joined Umphrey’s McGee member Ryan Stasik and Kris Myers for a tribute to Green Day‘s pop-punk classic Dookie), and the Buffalo natives made it count, offering up some incredible improv as well as a couple of very special surprise guests.Summer Camp Music Festival Kicks Off With Massive Thursday Pre-Party [Photos]The previously-planned Dookie set turned out to not be the only Aqueous/Umphrey’s crossover of the weekend, as Aqueous was joined by Umphrey’s keyboardist Joel Cummins and moe. drummer Vinnie Amico for a funky run through Steely Dan‘s 1976 hit “Kid Charlemagne.” Today, Aqueous has finally released pro-shot video of the Umphreys/moe. collaboration, so we can all relive the surprise sit-in in full multi-camera HD. You can check Joel and Vinnie’s guest appearance with Aqueous at Summer Camp below, via the band’s YouTube page:SETLIST: Aqueous | Summer Camp Music Festival | 5/25/17SET 1: Skyway > Origami1 > Second Sight, Kid Charlemagne2 3, Triangle > Strange TimesNOTES:1 Unfinished2 First Time Played, Steely Dan Cover3 Featuring Vinnie Amico (moe.) on drums, Joel Cummins (Umphrey’s McGee) on keyboards[Cover photo via Phierce Photo by Keith G.] Although collaborations like this double-trouble sit-in at Summer Camp tend to be rare, fans will have the chance to see some brand new Aqueous/Umphrey’s McGee crossover action next Friday, July 7th, Umphrey’s McGee will return to Central Park’s SummerStage, with Aqueous serving as the band’s opening act. Immediately following the SummerStage performance, fans will head downtown to the Highline Ballroom, where Aqueous will host their own headlining official late-night show featuring help from Joel Cummins and his Umphrey’s bandmate, guitarist Jake Cinninger. Tickets are still available for both the SummerStage show and the Highline Ballroom late-night.