Credits - Adventure Time: Pirates of the Enchiridion Soundtrack

This song, "Island Song (Come Along with Me)" composed by Ashley Eriksson, is also the credits song for Adventure Time.

Soundtrack composed by Chris Jolley and Ben Scholey

Original Soundtrack from "Adventure Time: Pirates of the Enchiridion" developed by Climax Studios:
https://store.steampowered.com/app/728240/Adventure_Time_Pirates_of_the_Enchiridion/

Disclaimer: I do not own the rights to the music or picture; all credit goes to individual composers and artists.