His Theme (From Undertale)

Toby Fox · Shared by Lê · Key of Gb · Medium

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Converted from YouTube

This sheet was made from Sheet Music Boss’s YouTube piano video, “His Theme (from Undertale) - Piano Tutorial”. Watch it, then keep practicing here.

Do not worry about me… Someone has to take care of these flowers.
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His Theme (From Undertale) by Toby Fox

About “His Theme (From Undertale)”

This medium level song is in the key of Gb at 91 BPM. Uploaded by Lê.

Questions about this song (9)
How does Simplified Piano Arrangement differ from full sheet music for "His Theme (From Undertale)"?
Simplified Arrangement keeps the melody and chords on a simplified staff with lyrics, color-coded for easy recognition. It's a learner-bridge between Beginner mode and the classic engraved Sheet Music — same song, less visual density.
What key is "His Theme (From Undertale)" by Toby Fox played in?
His Theme (From Undertale) is arranged in the key of Gb on Super Simple Piano. You can transpose to any other key live in the player.
What's the tempo (BPM) of "His Theme (From Undertale)"?
The arrangement plays at 91 BPM. Use the speed control (10-200%) to practice slower or play faster.
Is "His Theme (From Undertale)" easy to play on piano?
This is a medium-difficulty arrangement. Most players can learn it within a few practice sessions using the speed control.
Can I download sheet music for "His Theme (From Undertale)"?
Yes — registered users can download PDF sheet music, plus MIDI and MusicXML files for use in other notation software.
Who composed "His Theme (From Undertale)"?
"His Theme (From Undertale)" was originally performed by Toby Fox. The Super Simple Piano arrangement is simplified for beginner-to-intermediate players.
What other songs by Toby Fox can I play here?
Try "Attack of the Killer Queen (from Deltarune)", "Battle Against a True Hero (from Undertale)", "Bergentrückung + ASGORE (from Undertale)". All are in our player with color-coded notes; pick the one matching your level.
Is Simple Sheet good for learning to read sheet music?
Yes! Simple Sheet bridges the gap between beginner color-coded modes and traditional notation. Notes are displayed on a simplified staff with colors, lyrics, and chords — helping you build music reading skills gradually while still enjoying "His Theme (From Undertale)". Key of Gb, 91 BPM.
What's the difference between Simple Sheet and Lead Sheet?
Simple Sheet shows a more streamlined, horizontally scrolling view with color-coded notes on a staff and lyrics below — like a simplified version of real sheet music. Lead Sheet shows melody with chord symbols above and full lyrics. Simple Sheet is the next step toward reading traditional notation.
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