As a producer and engineer, Kase Romero began working primarily at the Lake House Recording in Asbury Park, New Jersey, in the early 2010s, and is noted for his work with Lorde and the Bouncing Souls.

[2] In addition to studio production, Kase Romero does arrangements, such as playing a Hammond B3 for the Jackson Pines' album Gas Station Blues & Diamond Rings.

[3] Music journalist Bob Makin describes some of Kase Romero's signature production nuances as "bouncy bass lines and sweet gang vocals.

"[4] Kase Romero played with Jeff Lane and Natalie Newbold in the groups Green Paper and the Humboldts, before forming dollys in 2013.

[6] After dolly's disbanded in 2017, Kase Romero joined as bassist for the band the Front Bottoms.