Singing battle?

Commission for an friend on Discord, with his 3 ocs. Mira, Scarlet, and DJ

Mira and Scarlet decided to have singing competition after some discussion close to the beach. But Mira decided the place where they "battle" will be done, and it turns out to be an completely sunked scenary. Even if the situation didn't seen very favorably for Scarlet, she's ain't no coward! Even tho, DJ just think she's outright an idiot by accepting the challenge.

Mira completely has 0 singing skills, but is capable of survive without air, meanwhile Scarlet is an certainly great singer, but.. well, she needs air.