Hi, a metroidvania is not a easy task to accomplish. Sure you will need help. I'am composer so i can make music ^^ . I've took a look to your previous works and i like your "fun approach".
let's listen what i've made until there and if you will be interested just tell me , otherwise i wish you a good jam .
https://kayupla.bandcamp.com/
https://soundcloud.com/kayu-pla