Rocked-out psychedelic jazz meets jazzy psychedelic rock in this well-matched double-header. Both groups have been honing their live chops as of late. Rotary Downs sounds at times like a moody Ennio Morricone soundtrack and at times like a high-school marching band on mushrooms. It has returned from a couple of high-profile gigs at the Bonnaroo Music Festival and northern California's High Sierra Music Festival. Other Planets (pictured) are at the end of a three-month-long residency at the Dragon's Den. This final night in the series will serve as both a tag-team recording for a live album featuring both bands and a release party for the Planets' third album, Holiday for Vacationers, which is possibly its best mashup of weird wizardry yet. The combo melds psych-rock and space-jazz into a smoking, burbling cocktail of delicious poison that's heavy with Frank Zappa influences, plus equal parts Syd Barrett, Brian Wilson and a smidge of Camper van Beethoven. Its horns can soar like Alvin Batiste at his most cosmonautical or lilt sloppily like Sgt. Pepper. Tracks like the bitingly creepy 'Happy Time at the Mall" burrow into your brain as hypnotically as a Zappa opus. Tickets $7. Alison Fensterstock
10 p.m. Sun., July 27
Dragon's Den, 435 Esplanade Ave.