Boots is the producer/singer/songwriter/rapper with a magical ear who blessed “80%” of last year’s earth-shaking Beyoncé album. (When the internet discovered him, it kind of freaked out.) Today, he’s sharing his debut solo mixtape, WinterSpringSummerFall. Recorded around the world over the course of the year, its 16 songs are laser sharp but delightfully all over the place, like a stream-of-consciousness that’s at turns sexy, lonely, and uplifting. Songs bounce from one time signature to another, and braid together fragments of sounds picked up and preserved — a bit of a voicemail, a little yawn, a train. Fittingly, the tape weaves together the efforts of a bunch of collaborators: composer Son Lux, singer Kelela, super duo Shlohmo & Jeremih, and king Beyoncé herself.