By June of 1981, Prince had recorded mostly complete versions of “Controversy,” “Annie Christian,” and, possibly, “Sexuality,” at his home studio in Chanhassen. He recorded four more songs that month at Hollywood Sound Recorders in Los Angeles: “Let’s Work,” “Do Me, Baby,” “Ronnie, Talk to Russia,” and “Jack U Off.” The HSR sessions were completed with Bob Mockler, the engineer who had helped put the finishing touches on both Prince and Dirty Mind. According to biographer Per Nilsen, Prince booked a full week at the studio, but completed the songs in a handful of days: “We just worked so fast together,” Mockler recalled. “Prince would just go and put the drum part on the tape, and then he’d put everything to the drums, playing a bass part, then a keyboard part, then a guitar part, background vocals, a rough lead vocal. Once he got the backing tracks down, he did a serious lead vocal. Everything was in his head. We’re out of there in a day with a finished track” (Nilsen 1999 80).
Two months later, Prince returned to Hollywood to finish his fourth album; but equipment problems necessitated that he move operations from HSR to nearby Sunset Sound. He booked Sunset’s largest room, Studio 3, as a “lockout session,” meaning that “he had that studio 24 hours a day for as long as [he] wanted,” engineer Ross Pallone recalled. Pallone would have the studio ready each afternoon around four; Prince “would show up sometime between [eight] and 10, and we would work all night… I remember going home to my house between [four] and [six] in the morning, and sleeping till about [two], then going back to the studio every day” (Brown 2010).
One of the perks of the lockout session was that Prince “could have anything equipment-wise he wanted set up in there–be it outboard gear or musical instruments–and no one could touch it,” Pallone told author Jake Brown (Brown 2010). The artist took this opportunity to record a new song, “Private Joy,” with a brand new toy: the Linn LM-1, a state-of-the-art drum machine designed by musician and engineer Roger Linn. Released in 1980, the LM-1 was the first drum machine to use digital samples of live acoustic drums, rather than the synthesized white noise and sine waves utilized by earlier models. Prince wasn’t the first artist to own an LM-1; Fleetwood Mac, Peter Gabriel, Leon Russell, Boz Scaggs, Stevie Wonder, and even Daryl Dragon–the “Captain” of Captain & Tennille–all ordered theirs direct from Linn (Vail 292). But more than any of his contemporaries, it was Prince who would leave an indelible mark on the machine’s prominence in popular music and its expressive possibilities.