As you hold your instrument in a hard grip, you play each note and call out with primal energy to strenghten the noice. Each creature in a 15-foot cone must make a Constitution saving throw. A creature takes 3d6 thunder damage on a failed save, or half as much damage on a successful one.

The thunder sends any loose, light objects in the area that aren't being worn or carried flying at least 10 feet without enough force to hurt anyone.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.