Airship Level Theme from Super Mario Bros. Wonder Epic Version Original composed by Koji Kondo, Shiho Fujii, Sayako Doi, Chisaki Shimazu Arranged and produced by Kevin Grim
That image is so cool. It really captures the mystery of the airship and how terrifying it should feel. If you encountered it in real life it would be terrifying and devastating.
If there was a final boss on the airship, then the boss should have this theme, the first part at 0:00 should have a cut scene and the at 0:21 the boss begins