The third album from Massachusetts post-rock cosmonauts Caspian is a gorgeous 57-minute float through ghost choirs, Earth-ly desert ambles, guitars beamed from the Envy school of decimation, and, of course, builds, builds, builds. It’s been a hot minute since we went completly gaga over a post-rock album — was Wavering Radiant? really three years ago? — and Waking Season hits that majestic, hypnotic sweet spot, making room for Tim Hecker-fried drones, Joshua Tree-era U2 atmosphere and voices skipping like they were controlled by DJ Rashad or the Books. It’s due out next week on Triple Crown Records, and they’ll be blowing Minus the Bear off stage for the rest of September, but you can get lost in Waking Season right now.