For a project that started as making music for the intermissions during the 2015 Fare Thee Well shows, Neil Casal’s Circles Around the Sun has blossomed into a full-fledged band at this point. The four-piece’s second album is appropriately titled Let It Wander , a double album that’s long, winding and expansive—just seven songs fill an hour and 17 minutes. What’s apparent from the onset in listening to these new instrumentals is how adept CATS are at melding psychedelic overtones with jazzy arrangements at times, and proggy rock at others. On the 19-minute number “Halicarnassus,” those moods can be touched upon all at once. The driving force though is still Casal—who’s history with psychedelic-rock is rooted in his time spent with Ryan Adams & The Cardinals in their most prominent Grateful Dead phase, as well as Beachwood Sparks and Chris Robinson Brotherhood. On “Tacoma Narrows,” fierce guitar solos float about the band’s hypnotic groove and on the slow-building “Electric Chair (Don’t Sit There),” he sounds like a David Gilmour clone—and that’s a good thing. Public Enemy’s Chuck D also makes the album’s lone guest appearance—the story goes that he unexpectedly dropped by the studio when they were recording the first song and he offered to do a quick intro. Thus, “One for Chuck” was born. It’s random and unexpected but that’s CATS’ MO If you’re looking for perpetual grooves, then Let It Wander satiates in that regard. At times, the wandering feels a bit redundant; it’s easy to space out during many parts of this, only to return in a very similar spot.