Halsey, Niall Horan, and Katy Perry attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles. The star-studded celebration brought out 1000 guests.

Katy Perry attends Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles. Earlier in the day, Perry joined Capitol Music Group chairman/CEO Steve Barnett and Universal Music Group chairman/CEO Sir Lucian Grainge in unveiling the label's star on the Hollywood Walk of Fame—the first record company to achieve that accomplishment.

Perry Farrell, Etty Lau Farrell, and Tom Morello attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Niall Horan and Tori Kelly attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

A view of Capitol Records Tower, host venue of Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Beck Hansen, Katy Perry, and Capitol Music Group Chairman/CEO Steve Barnett attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

MC Hammer and Capitol Music Group Chairman and CEO Steve Barnett attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles. Throughout the evening, the hip-hop icon was besieged with guests' photo requests.

Halsey and Katy Perry attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles. After signing with Capitol, Halsey remembers thinking, "God, to even have my name next to people like The Beatles, Beastie Boys or Katy Perry, who I was wildly starstruck by — it was massive."

Chairman and CEO of Azoff MSG Entertainment Irving Azoff, music manager Troy Carter, Capitol Music Group Chairman/CEO Steve Barnett, iHeartMedia President of Entertainment Enterprises John Sykes, and Executive Vice President of Universal Music Group Michele Anthony attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Luke Hemmings, Calum Hood, Michael Clifford, and Ashton Irwin of 5 Seconds of Summer attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Capitol Music Group Chairman/CEO Steve Barnett, recording artist Beck, and recording artist Bob Seger attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

UMG Chairman and CEO Sir Lucian Charles Grainge, Kevin 'Coach K' Lee, Pierre 'Pee' Thomas, recording artist Lil Yachty, and Capitol Record Group Chairman and CEO Steve Barnett attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles. Hip-hop newcomer Lil Yachty is also a Katy Perry fan. "I'm really excited to meet her tonight," he said. "I grew up listening to her music."

Halsey, Capitol Music Group Chairman/CEO Steve Barnett, and recording artist Niall Horan attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Bob Seger and Blue Note Records president Don Was attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Ashton Irwin, Michael Clifford, and Luke Hemmings of 5 Seconds of Summer attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Maggie Rogers attends Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Katy Perry poses with a couple of commemorative album replicas at the Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Neil Diamond and Katie McNeil attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.

Katy Perry and MC Hammer attend Hollywood Gala celebrating Capitol Records 75th Anniversary on Nov. 15, 2016 in Los Angeles.