‘Previously unreleased Prince music is “coming soon,” estate adviser Troy Carter tells Variety, although he declined to specify any further details about the recordings. “He was a guy who practically lived in a recording studio, and once we started going through [the unreleased material] we really started finding some gems,” Carter, who is also Spotify’s global head of creative services, said earlier this month. “I heard some music the other night that was pretty mind-blowing and we’re getting some stuff mixed right now. We’ve got great projects in the works that I’m excited to talk about. “So the answer is...