Undersong

This spell brings to your mind a song that helps you retain your concentration. The song does not distract you from any task at hand—on the contrary, by humming along to the tune, you can focus your mind with ease.

For the duration, whenever you make a concentration check, you may roll A Charisma (Performance) Check instead.

At Higher Levels. When you cast this spell using a spell slot of 3rd or 4th level, its duration becomes 1 hour, if you cast it using a spell slot of 5th level or higher, its duration becomes 8 hours.