Quick Scoop

“Big Shot” from Deltarune is primarily in B♭ minor. A few sources also list it as A♯ minor (which is the same pitch as B♭ minor) or notate parts in D♯ minor.

What key is Big Shot in Deltarune?

The main, official key of the track is:

  • B♭ minor (also written as A♯ minor).

Because B♭ and A♯ are the same pitch class, you’ll see both names depending on the source:

  • Sheet music and some analyses: B♭ minor.
  • Some audio-analysis sites: A♯ minor.

Some sections of the song are also analyzed in D♯ minor (the relative major of B♭ minor’s enharmonic equivalent), but the overall tonal center stays B♭/A♯ minor.

Practical notes for players

If you’re playing or transposing:

  • Use B♭ minor as your base key:
    • Scale: B♭ – C – D♭ – E♭ – F – G♭ – A♭ (or enharmonically: A♯ – B – C – D – E – F – G).
  • Tempo is around 140 BPM , which matches the boss-theme energy and stop-start “Spamton” feel.
  • Many piano tutorials and sheet music are published in B♭ minor, so that’s the most convenient key to follow.

Why the different key names?

You might see:

  • B♭ minor – standard notation in sheet music and theory sites.
  • A♯ minor – same key, just a different naming convention (enharmonic).
  • D♯ minor – used for specific sections or analyses, but not the main key.

All of these are consistent once you understand enharmonic equivalence:
B♭ = A♯, and D♯ minor is closely related but not the primary tonal center. Information gathered from public forums or data available on the internet and portrayed here.