"Zoom needs the Audio Settings changed when doing music. Un-check
Automatically adjust microphone volume, click the Advanced button, then in
that window put a check on Show in-meeting option 'Enable Original Sound'
from microphone, then under Audio Processing change both Suppress
Persistent Background Noise and Suppress Intermittent Background Noise to
Disable. Back in the main Zoom window, you will see in the upper left Turn
on Original Sound, click it so it shows Turn off Original Sound."