Venture capitalist Roger McNamee probably thought he was being clever when he and bandmate Jason Crosby decided to call their classic rock cover band the Doobie Decibel System. However, the Doobie Brothers are unamused and have sued the Doobie Decibel System for "willful intent to trade on" their "fame and reputation, or to cause confusion, or to cause mistake, or to deceive consumers." (Billboard)

Top 40 hitmakers were making headlines Sunday night in the Twin Cities. Katy Perry visited St. Paul for the Starkey Foundation's annual celebrity gala, where she posed with former Presidents Bill Clinton and George W. Bush. (Billboard) Meanwhile, One Direction were playing at TCF Bank Stadium, sending blogs atwitter when Louis Tomlinson ripped bandmate Liam Payne's shirt off and tweaked his nipple. (Billboard)

Lauren Mayberry of CHVRCHES sat down for a fun conversation with HAIM backstage at the Pitchfork Music Festival. "In their funny, freewheeling conversation," writes Pitchfork about the Talkhouse podcast, "the Haim sisters and Mayberry discussed forgetting lyrics on stage, how to pronounce 'GIF,' getting hit in the face while performing, and more."

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Sky Ferreira cited scheduling complications and health issues in delaying the release of her new single and video. "It IS coming soon & it is going to be nothing less than amazing!" wrote Ferreira about the song, which was originally scheduled for a summer release. (Pitchfork)

The Houston Astros have rescheduled Taylor Swift's Minute Maid Park show from October to September, in hopes that the park will be seeing postseason action. (Billboard) Meanwhile, in a show outside of Boston, Swift danced with a projection of "Left Shark" in what was seen as a swipe at her rival Katy Perry's Super Bowl halftime show. The shark's appearance came during "Bad Blood," a single that's been interpreted as a Perry dis track. (Consequence of Sound)

Joe Jackson, father of Michael Jackson and his siblings, suffered a stroke in Brazil during his 87th birthday celebration. Joe Jackson was admitted to intensive care at a hospital in Sao Paulo, and is currently doing "extremely well" after having a heart procedure, tweeted his son Jermaine Jackson. (NME)

Keith Richards released a new video for his single "Trouble." The video shows him performing the song with bandmates Waddy Wachtel (guitar) and Steve Jordan (drums). (Rolling Stone)

Florence and the Machine have released a ten-minute short film to accompany How Big How Blue How Beautiful tracks "Queen of Peace" and "Long & Lost." (NPR)

On Sunday night at Madison Square Garden, Lady Gaga joined U2 for a performance of "Ordinary Love." (Rolling Stone)