Yes

Ash walked over to Meloetta, who had a wide grin and pink blush.

"You wish to be my partner?" She telepathed in a sing-songy voice.

"Yes, I do." Ash said as he kissed the musical pokemon.

Ash felt himself began to transform, and knew he was becoming something completely new. His face turned light blue and flatted as his hair spiked up, little music notes scattered across its waves. His body became smaller, reaching the same size as Meloetta. A little headset appendage grew from his skull, the last thing to be transformed.

The transformation finished with a cymbal crash, and Ash found himself on the ground, Meloetta nuzzling him as she held him.

Arceus turned to the rest of the legendaries. "I introduce to you the new mythical pokemon, the Baritone Pokemon, Harmonik."