Inversion Stack

Each challenge shows a bass note plus a figured-bass symbol. Your job is to stack the correct chord tones above that bass on the on-screen keyboard, then submit. A round walks the same diatonic triad through all three positions so you internalise root, first and second inversion.

• Play the bass and figure to know which triad is implied
• Click the keys that complete the chord above the bass
• Submit a correct stack to clear the challenge and move on
• Use a hint if a voicing has you stumped

• Desktop: click piano keys to add or remove notes; use the Clear, Hint and Submit buttons
• Phone & tablet: tap the keys and buttons, the whole interface is touch-driven

• Find the root from the figure first, then spell up in thirds
• Remember the bass is fixed, you are choosing the notes that sit above it
• Lean on the repeated triad: once you voice it in root position, the inversions are the same notes reordered

Inversion Stack turns figured-bass reading and chord inversions into a quick stacking puzzle.

• Skills: chord inversions, figured bass, harmony, music theory
• Best for: roughly grades 9–12 (ages 14+)
• For parents & teachers: chord inversions and figured bass.

Stacking the correct chord tones above a bass note from a figured bass symbol is the Baroque shorthand performed as its own notation.

Walking the same chord through its inversions is the original structure.

Figured bass is a functioning system rather than a historical curiosity. The numerals give intervals above the bass, so the same chord takes different figures depending on which note is underneath — which is exactly the information a continuo player needed and a chord symbol throws away.

Inversion Stack is an original, free browser game that turns figured-bass reading and chord inversions into a quick daily drill. It is built in-house, no downloads, just open and play.

A free, original browser game on PlayPendium. No download, no install.