It's not for an Undertale AU, but I made an Undertale-style Rhett and Link battle theme. I used the GMM opening, Dope Zebra, My OCD, I'm On Vacation, It's My Belly Button, The Cat's 9 Lives Song, and the GMM ending theme.

Your Mythical Best

I am the creator of Nintendotale, which nobody's even heard of so whatever. If anybody feels like complaining about how limited my soundfonts seem to be, that's because I make everything on beepbox.co. I don't really care if you complain or make fun of the song qualities though, I already think they're all garbage

Also, I have a second account since I'm out of minutes on this one. It's here: https://soundcloud.com/empoleonnerd2

Just make that shit and post that shit. Enjoy your life!
- https://soundcloud.com/botanicsage
my mashup tournament
https://soundcloud.com/raveweek
alt accounts
https://soundcloud.com/bagelman69420
https://soundcloud.com/sylviagunter
https://soundcloud.com/theallconsuminglordofcum
https://soundcloud.com/iwannafuckbobhope
https://soundcloud.com/wouldyoufuckthisgoat
https://soundcloud.com/mrbrightsidefusioncollab
https://soundcloud.com/muffetr34
https://soundcloud.com/flanderskiller7
https://soundcloud.com/soundclown-repainted
https://soundcloud.com/8-bit-generatiion7
https://soundcloud.com/9goodparent
https://soundcloud.com/joelismygranddad
https://soundcloud.com/afuckingwasteofbandwidth
reupload accounts
https://soundcloud.com/ytp4life-alt
https://soundcloud.com/do-your-best
https://soundcloud.com/iwanttojizzonbobhope
archive accounts
https://soundcloud.com/pingasking
https://soundcloud.com/dj-fruitsnarchive-2
https://soundcloud.com/dj-fruitsnarchive-3
https://soundcloud.com/driedfruitwang

If you want a remix that's sure to please, come check out some o' these!! Be sure to also check out my new YouTube channel for more!

https://www.youtube.com/channel/UCKBq7tbDjGM4oS_dzR8YBOQ

Your Mythical Best

EmpoleonNerd