Kendrick Lamar's new album To Pimp a Butterfly was released last night on iTunes and Spotify, a week ahead of its scheduled release date. Later this morning, it was taken down from iTunes—and then, in another reversal, it was made available again. It now seems to be out for real, and listeners are digging it. (Billboard)

Prince and 3RDEYEGIRL played an epic weekend of shows in drummer Hannah Welton's native Louisville, Kentucky. "This your home town?" Prince asked Welton at one point. "Well, it's as funky as you said it'd be." Future stops on the band's "Hit & Run" American tour are expected to be announced soon. (Rolling Stone)

Are the Rolling Stones coming to Minnesota? A billboard teaser has people talking about what news might be coming on Thursday. (Pioneer Press)

This year's Glastonbury headliner is Kanye West. (SPIN)

Björk released a video (a.k.a. a "moving album cover") for her song "Family." (Stereogum)

Mark Ronson and Bruno Mars are enjoying their tenth consecutive week at the top of the Billboard Hot 100 with "Uptown Funk." That puts the song in company with the likes of Pharrell's "Happy," Olivia Newton-John's "Physical," and Debby Boone's "You Light Up My Life," all of which spent ten weeks at the top of the charts. The record-holder for longest reign at #1 is "One Sweet Day" by Mariah Carey and Boyz II Men, which topped the charts for 16 weeks in 1995-96. (Billboard)

Hymie's Records announced the lineup for their fifth annual Record Store Day Block party; this year's bash on April 18 will feature Chastity Brown, the Ericksons, Southside Desire, and more. (Local Current)

Sarah Jane Perbix, a pianist for Cloud Cult and Jeremy Messersmith, has opened a new music school in Northeast Minneapolis. Among the instructors are Haley Bonar and members of BBGUN and Har-di-Har. (Local Current)

Bloomington, Minnesota "hippie hop" artist Mod Sun (now living in L.A.) is attracting attention for his promotional partnership with Twitter. Another artist mentioned in a Billboard article about the power of Twitter is Wisconsin's Amanda Palmer.

Meghan Trainor announced a summer tour that will stop at the Great Minnesota Get-Together on Sept. 1. (Billboard)