Emile's Bass

You may pay 3 life. If you do, you may cast
Emile's Bass without paying its mana cost.
Emile's Bass enters the battlefield tapped with
four music counters on it.
{t} : Add one mana of any color for each music
counter on Emile's Bass.
At the beginning of your upkeep, you may
remove a music counter from Emile's Bass. If
you don't, it doesn't untap during your untap
step.