"Used to Be" is a song by American DJ and producer Steve Aoki and American singer-songwriter Kiiara, featuring American rapper Wiz Khalifa.

The song was released on March 19, 2021 via Big Beat.

[2] "Used to Be" contains a sample from Matchbox Twenty's single "Unwell" (2003), and reimagine.

[3] The music video was directed by Noah Sterling and animated by Dreambear.

Aoki, Kiiara and Khalifa fighting with an evil villain to save their "galactic city".