Chords, keys, and waveforms you can hear.
Interactive references built at MARS Studio for producers, guitarists, and keyboard players. Pick a chord to see it on the keys and play it back, or open a full tool below.
Chord player
Root
Chord
D Minor 9
The tools
Each one is a single page. No sign-up, and the chord and audio tools run in your browser.
Chords
See a chord on the keys and on the neck, then learn shapes you can play.
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Piano Chord Reference
Every 7th and 9th chord on any root, with live keyboard highlighting and a full interval breakdown.
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Guitar Chord Reference
The same chord library mapped across the fretboard in standard tuning, so you can see where every tone lives on the neck.
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Guitar Chord Shapes
Major 7, minor 7, half-diminished, diminished, and dominant 9 as playable diagrams, with three movable forms of each.
Keys and harmony
How keys relate to each other, and which chords belong to each one.
Sound design
What the basic waveforms sound like, and what happens when you stack them.
In progress: MPC workflow references, sample bank organizers, and other studio utilities.
Production and audio work
Independent mixing engineer and producer working from MARS Studio in Florida. Mixing, beat production, and podcast and broadcast audio, remote or in person.