Mainstream Sellout, executive produced by Travis Barker, is Machine Gun Kelly's sixth studio album, which includes multiple hit singles and landed him on the cover of Billboard. The album boasts features from Gunna, Young Thug, blackbear, WILLOW ("Emo Girl"), Lil Wayne ("Ay!"), and Bring Me the Horizon ("Maybe"). It landed at #1 on the Billboard 200 Albums chart, becoming his second straight chart-topper and the first rock album to hit #1 since 2020.