What is this?

ToneMap is your personal guide to learning piano chords! It was designed with the hopes that "we all benefit when knowledge is easier to access." Interested in hearing about any changes? Sign up for the newsletter!

It is distributed free of charge -- as Open Source software. That means its free to use for whatever, forever. Just give anyone you distrubute to the same permission! The source code can be found on github along with a copy of the MIT license.