By Toby Fox dragonxvi SoundCloud dragonxvi Tumblr DragonXVI Twitter.
Cover art by Toby Fox.
Released 09/15/2015.
Duration: 3:01.

Listen on Bandcamp or YouTube.

Download sheet music files.
Download MIDI/project files.
Read artist commentary.

Tracks that reference Once Upon a Time:

• Start Menu by Toby Fox, From UNDERTALE
• Home by Toby Fox, From UNDERTALE
• Home (Music Box) by Toby Fox, From UNDERTALE
• Hotel by Toby Fox, From UNDERTALE
• Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything by Toby Fox, From UNDERTALE
• Undertale by Toby Fox, From UNDERTALE
• The Choice by Toby Fox, From UNDERTALE
• Finale by Toby Fox, From UNDERTALE
• Fallen Down (Reprise) by Toby Fox, From UNDERTALE
• Hopes and Dreams by Toby Fox, From UNDERTALE
• SAVE The World by Toby Fox, from UNDERTALE
• Last Goodbye by Toby Fox, from UNDERTALE
• Good Night by Toby Fox, from UNDERTALE
• Before The Story by Toby Fox, from UNDERTALE
• Beginning by Toby Fox, from UNDERTALE
• You Can Always Come Home by Toby Fox, from UNDERTALE
• Dogcheck by Toby Fox, from UNDERTALE

Artist commentary:

Lena Raine: (Composer, Twitter)

also if you're curious, i did the solo transcription & arrangement on 'cyber battle' as well as about half the arrangement on 'attack of the killer queen'. marcy transcribed, toby started it, I filled it out, and he went back to do a bit more details~ big cool team-up power move!

Marcy Nabors: (Composer, Twitter)

I’ve had Attack of the Killer Queen stuck in my head since basically the moment Deltarune Ch. 2 got announced and that’s how I know we did a good job