Backup Band

In addition to its components, you must be playing an instrument as you cast this spell.

You create the sound of a backup band that accompanies your music playing for the duration or until you dismiss it or end your playing. The sound can be anything you like, whether it be additional instruments, vocals, or something else. You can choose to change the sound throughout the duration.

If a creature uses its action to examine the sound, the creature can determine that it is an illusion with a successful Intelligence (Investigation) check against your spell save DC. If a creature discerns the illusion for what it is, the sound becomes faint to the creature unless it chooses for it not to be.