Alinaris' Explosive Tunes

By humming a bit of catchy melody you attempt to infect your target's mind with an irresistible earworm that compels it to begin dancing and humming the tune itself. The creature must succeed on a Wisdom saving throw or be charmed and compelled to do nothing but sing along with you and dance in place so long as you concentrate on the song (up to 1 minute). So long as you continue to hum the tune (up to 1 minute) any creature within hearing distance of you, or within hearing distance of any creature affected by the spell must succeed on a Wisdom saving throw or begin humming the tune as well. Any creature that succeeds on it's Wisdom saving throw cannot be affected by your casting of this spell again within 24 hours.

Upon ending your concentration (or reaching a full minute of performing the tune), the compulsion ends, but the creatures explode immediately. Each creature in a 20-foot-radius sphere centered on the point the creature stands at (for each creature) must make a Dexterity saving throw. A creature takes damage equal to the total accumulated damage on a failed save, or half as much damage on a successful one. The explosion's base damage is 6d6, with +1d6 damage per 5 turns spent concentrating on the spell (7d6 at 5 turns, 8d6 at 10). Overlapping explosion radiuses cause Dexterity saving throws and roll damage separately for each explosion.