text: In 2019, Barker teamed up with popular New Orleans alternative hip hop duo $uicideboy$ to announce Live Fast Die Whenever, a collaborative EP. Prior to the project's release, the singles "nothingleftnothingleft" (a rapid-fire hardcore punk song) and "Aliens Are Ghosts" (which samples music critic Anthony Fantano's review of $uicideboy$' debut album) were released. The EP was released on May 24. Along with the lead singles, the EP also included the songs "Killing 2 Birds with 22 Stones", "Sour Grapes", "Don't Trust Anyone!" (stylized in all caps), and "Individuality Was So Last Year". Several tracks on the EP also featured James Shaffer of Korn on guitar. On July 12, 2019, Travis remixed Lil Peep & XXXTentacion's posthumous track "Falling Down".
  On April 24, 2020, during the COVID-19 pandemic, Barker was featured as the drummer during Post Malone's well-received Nirvana tribute show and fundraiser for the WHO COVID-19 Solidarity Response Fund.
  In May 2020, Barker signed American musician and TikTok personality Jxdn to his label DTA Records, making Jxdn the first artist on the label.
  In September 2020, Barker was on a collaboration project with Machine Gun Kelly on Kelly's album Tickets to My Downfall. He was also heavily featured in the movie adaptation of this album, Downfalls High. Barker played on the Willow Smith pop-punk track "Transparent Soul", released April 27, 2021.
  In February 2021, he launched a line of cannabinoid-infused products called Barker Wellness. The next month, on March 15, 2021, Barker was a featured artist in the Atreyu song "Warrior" on the album "Baptize."