Who is credited with mixing Steve Lacy's Is It Cool?

Jon Castelli is credited with mixing Steve Lacy’s “Is It Cool?”. The song’s personnel credits distinguish his mixing role from the track’s writing, production, engineering, and mastering credits.

“Is It Cool?” was released on June 26, 2026, as a promotional single from Oh Yeah?, with SZA as the featured vocalist. The song explores trust, infidelity, and emotional immaturity through an R&B and soul arrangement with funk touches.

Mixing is the stage in which recorded elements such as vocals, instruments, effects, and backing parts are balanced and shaped into a finished stereo presentation. It is different from mastering, which was credited to Ruairi O’Flaherty on this track.

The alternatives represent nearby studio roles. Karl Wingate is credited as a producer, Caleb Laven as an engineer, and Ruairi O’Flaherty as the mastering engineer. Their presence in the same personnel list can make the mixing credit easy to misidentify.