He could be pulling something like 1/2 million as a DJ. Still a side gig, but not quite as trivial especially when his CEO pay isn’t directly tied to hours worked.

“His Spotify profile has 550,000 monthly listeners with his debut single garnering 8 million listens.”

It varies but this list is showing several people at close to 1$/year per monthly listener. https://www.internetdj.com/top-djs