We create tools like our free diatonic harmonica charts to help you or your students become better harmonica players.
Join Our DiscordHarmonica.dev provides free, interactive charts for the 10-hole Richter-tuned diatonic harmonica. Browse every note, scale, and position laid out hole by hole, then hear each one played back instantly.
Charts for all 12 keys across 12 positions. See exactly which holes to blow and draw for any combination.
Major, Minor, Pentatonic, Blues, Dorian, Mixolydian, and more. Each scale highlights the notes you need on the chart.
Hear any scale played note by note with adjustable tempo, direction, and looping. Train your ear while you learn the layout.
Every bend and overblow is mapped out. See which holes give you those extra chromatic notes and how they fit each scale.
Each note shows harmonica tab — like 4, -4, -3`, or 6o — so you can read charts without knowing standard notation.
Fully responsive charts that work on your phone, tablet, or desktop. Practice anywhere with no app to install.
Jump straight to the most commonly used harmonica charts.
A position determines which note becomes the root of your scale. First position (straight harp) uses the key the harmonica is labeled in. Second position (cross harp) is the most popular for blues — on a C harmonica, 2nd position puts you in the key of G.
The Richter-tuned diatonic is the standard 10-hole harmonica used in blues, rock, country, and folk. Brands like Hohner Special 20, Lee Oskar Major Diatonic, and Seydel Session Steel all use Richter tuning.
Each column represents a hole (1–10). Notes are arranged by technique: blow (breathe out), draw (breathe in), bends, and overblows. Colored notes are in the selected scale; dimmed notes are available but outside the scale.
Most beginners start with a C harmonica. It's the standard key for instruction books and online lessons, and it works well for learning in both 1st and 2nd position.
Our diatonic harmonica charts are completely free — all 12 keys, every position, and all 15 scales. No account required. We plan to add other harmonica types and premium features in the future, but the core diatonic charts will always be free.