You was visiting the Reign of Bubbles, an Island with a Giant Sand Castle in the middle of Water with hundreds of Bubbles filling the Area

Suddenly, you heard some Singing in the Background, it sounded like a Female Choir but almost Synthesized like. As you went to check it out, you seemed to spot a little Cosmikharr

She was all alone, Singing to herself as she seemed to be making all that Choir Singing all by herself