text: In July 2021, Barker signed an exclusive worldwide publishing administration deal with Warner Chappell Music.
  In November 2021, Barker signed former BMG artist Avril Lavigne to DTA Records, with releases due to be handled by Warner Music Group's Elektra Records.
  In 2022, Travis Barker executive produced Machine Gun Kelly’s eighth studio album. Barker and Kelly announced the album name, Born with Horns, by getting matching tattoos of the album name on their arms. Kelly later changed the album title to Mainstream Sellout.
  In June 2023, Travis Barker met with Alex Etheridge, a 13-year-old Phoenix musician suffering from bone cancer who was a particular fan of Barker's drumming. Alex met Barker backstage at Blink-182's June 14, 2023 concert in Phoenix, and Alex and his family sat in the front row for the concert later. The two spent more than an hour together, talking and playing drums, including an introduction to Barker's wife Kourtney Kardashian via FaceTime. The meeting was set up by Australian social-media influencer Samuel Weidenhofer, who traveled from Melbourne to help arrange it. Weidenhofer recorded the meeting and released it later as a TikTok video, which has received more than 17 million views as of July 2023.  Alex died on July 19, 2023.