
*For a fraction of the cost of just one piano lesson




*For a fraction of the cost of just one piano lesson




*For a fraction of the cost of just one piano lesson



Learn music faster
Remember it longer
Memorize more securely
Play from lead sheets
Play by ear
Improvise music
Compose music
Learn music faster
Remember it longer
Memorize more securely
Play from lead sheets
Play by ear
Improvise music
Compose music
Learn music faster
Remember it longer
Memorize more securely
Play from lead sheets
Play by ear
Improvise music
Compose music



Click the piano keys to build a chord
The Chord Transposition Wizard tells you the name of the chord, its inversion, and what notes are in it
Click the "Play Chord" button to hear how it sounds

Click the drop-down menu to select the new note you want your chord to be built on
The Chord Transposition Wizard scrolls down to show you a keyboard with your new chord notes
The name and notes of your new chord are displayed beneath the keyboard
Click the "Play Transposed Chord" button to hear the chord in the new key


Ready to try out a new chord?
Just click the "Clear & Start Over" button



Click the piano keys to build a chord
The Chord Transposition Wizard tells you the name of the chord, its inversion, and what notes are in it
Click the "Play Chord" button to hear how it sounds

Click the drop-down menu to select the new note you want your chord to be built on
The Chord Transposition Wizard scrolls down to show you a keyboard with your new chord notes
The name and notes of your new chord are displayed beneath the keyboard
Click the "Play Transposed Chord" button to hear the chord in the new key


Ready to try out a new chord?
Just click the "Clear & Start Over" button


Click the piano keys to build a chord
The Chord Transposition Wizard tells you the name of the chord, its inversion, and what notes are in it
Click the "Play Chord" button to hear how it sounds
Click the drop-down menu to select the new note you want your chord to be built on
The Chord Transposition Wizard scrolls down to show you a keyboard with your new chord notes
The name and notes of your new chord are displayed beneath the keyboard
Click the "Play Transposed Chord" button to hear the chord in the new key


Ready to try out a new chord?
Just click the "Clear & Start Over" button





Enter the names of the chords in your chord progression, one at a time
You can transpose by key or by interval
Click "Go"


See your chords named in the new key
Click the "Respell chords" button to see an alternate spelling of your chords
You can transpose the same chord progression to up to 12 keys





Enter the names of the chords in your chord progression, one at a time
You can transpose by key or by interval
Click "Go"


See your chords named in the new key
Click the "Respell chords" button to see an alternate spelling of your chords
You can transpose the same chord progression to up to 12 keys


Enter the names of the chords in your chord progression, one at a time
You can transpose by key or by interval
Click "Go"


See your chords named in the new key
Click the "Respell chords" button to see an alternate spelling of your chords
You can transpose the same chord progression to up to 12 keys
Are learning to build, play, and identify chords and want a way to check your own work
Play chord-based music and want to transpose progressions into different keys
Learn best with instant feedback, rather than waiting for your next lesson to find out if you're on track
Want tools you can use anytime, on any device
Want to learn chord theory from the ground up — these tools are built to support chord practice you're already doing, not to teach the fundamentals
Prefer learning away from a screen — these tools live online, so you'll need a device and a little comfort clicking around to get the most out of them
Are learning to build, play, and identify chords and want a way to check your own work
Play chord-based music and want to transpose progressions into different keys
Learn best with instant feedback, rather than waiting for your next lesson to find out if you're on track
Want tools you can use anytime, on any device
Want to learn chord theory from the ground up — these tools are built to support chord practice you're already doing, not to teach the fundamentals
Prefer learning away from a screen — these tools live online, so you'll need a device and a little comfort clicking around to get the most out of them
Are learning to build, play, and identify chords and want a way to check your own work
Play chord-based music and want to transpose progressions into different keys
Learn best with instant feedback, rather than waiting for your next lesson to find out if you're on track
Want tools you can use anytime, on any device
Want to learn chord theory from the ground up — these tools are built to support chord practice you're already doing, not to teach the fundamentals
Prefer learning away from a screen — these tools live online, so you'll need a device and a little comfort clicking around to get the most out of them

I'm Marina, your best piano-playing friend who just happens to be a professional musician and educator.
I built these tools for my students to have instant, reliable tutoring when working on their chord skills. But that's not all...
I know that learning to build, recognize and play chords in all their inversions is the first step in using chords to become the best musician you can be. The next step? Put those chords together to make chord progressions!
So I also created a tool to help you transpose your chord progressions to different keys.
And now you have the next best thing to a knowledgeable piano teacher by your side, day or night, anytime you need a quick check-up on your chord work - for a tiny fraction of the cost of even one piano lesson.

I'm Marina, your best piano-playing friend who just happens to be a professional musician and educator.
I built these tools for my students to have instant, reliable tutoring when working on their chord skills. But that's not all...
I know that learning to build, recognize and play chords in all their inversions is the first step in using chords to become the best musician you can be. The next step? Put those chords together to make chord progressions!
So I also created a tool to help you transpose your chord progressions to different keys.
And now you have the next best thing to a knowledgeable piano teacher by your side, day or night, anytime you need a quick check-up on your chord work - for a tiny fraction of the cost of even one piano lesson.

I'm Marina, your best piano-playing friend who just happens to be a professional musician and educator.
I built these tools for my students to have instant, reliable tutoring when working on their chord skills. But that's not all...
I know that learning to build, recognize and play chords in all their inversions is the first step in using chords to become the best musician you can be. The next step? Put those chords together to make chord progressions!
So I also created a tool to help you transpose your chord progressions to different keys.
And now you have the next best thing to a knowledgeable piano teacher by your side, day or night, anytime you need a quick check-up on your chord work - for a tiny fraction of the cost of even one piano lesson.




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