Songs in Bowser's Castle Again made twelve songs to go with the stage just in case you for some reason wanted to replace Halberd with it or something. They're all from Mario games but not all Paper Mario games. From Paper Mario Final Battle With Bowser: The climactic theme of the last battle. Ominous yet triumphant. Bowser's Castle: Includes every version--the song adds a little intensity in each leg of the trip through it. Loops back around after almost six minutes. Cool for really long fights. Vs. Koopa Bros: The battle theme of the Koopa Bros. Somehow it sounds really... '90s. Like the game used the Koopa Bros. to mock '90s culture only two years out of the '90s. But it's okay now because the '90s were long ago enough that it's retro. Shiver Snowfield: The elegant background music of Shiver Snowfield. From Paper Mario: The Thousand-Year Door Vs. Bowser: The battle theme for Bowser when you fight him and Kammy Koopa near the end of the game. The Riddle Tower: The creepy music from inside the tower of puzzles set halfway through the last dungeon. From Super Paper Mario The Underwhere: The hellish music of the Underwhere. From New Super Mario Bros. Castle Level: Felt like there should be a theme from a main 2-D Mario game's castle levels and chose the one from New Super Mario Bros. SMB's is too short, SMB3's fortress and airship themes are already in Brawl and so are SMW's fortress and castle themes, and NSMBW's has an awkward loop that makes it hard to take seriously. So there. From Super Mario Galaxy Bowser's Galaxy Reactor: The dramatic theme of the last Galaxy. Sounds more like it's on Mario's side than Bowser's though. From Super Mario Galaxy 2 Bowser's Road: The cover of the theme of Bowser's levels in Super Mario 64. Really loved this one. From Luigi's Mansion It's Lonely At The Top: That's just what I like to call this thing I made. It's the outdoors background music of Luigi's Mansion with a wind track added over it. It bleeds loneliness. Vs. Bogmire: The battle theme of Bogmire. ...Yup. The intro to it is there.