Cross Harp
A dark metal Cross Harp harmonica surrounded by glowing orange sound waves

For diatonic harmonica players

Cross Harp

The harmonica, mapped.

Choose the right harp. Understand the position. See the scale. Know where the bends are—before you play the first note.

Interactive Harp LabBuilt for the instrument in your hand

Interactive Cross Harp

Map your harp.

Select your harp, tuning, position and scale to see every note, bend and root at a glance.

Harmonica
Scale
Techniques
2nd positionPlaying in G

Root note Scale note

Preparing your map…Tap any note to hear it.

Harmonica

Choose a key
Harmonica techniques

Choose playable techniques

Choose only techniques you deliberately use. Coverage and song recommendations update immediately.
Scale

Choose a scale

No complete octaves

Tempo120 BPM
Cross Harp app showing a selected harp, position, scale, note map, and its main navigation

Inside the app

From finding the harp to playing the song.

Cross Harp keeps the musical decision, the instrument in your hand, and the tune you are learning connected.

Four connected tools

Go deeper with Cross Harp.

Choose a feature to explore.

Cross Harp harmonica setup and note map
01 / Harp Lab

Harp, position, scale & bends

Explore a complete setup in the browser.
Cross Harp Circle of Fifths
02 / Positions

See how keys connect

Move through all twelve playing positions.
Cross Harp note map with blow, draw and bend notes
03 / Note map

Find every playable note

Scale tones and roots stand out instantly.
Cross Harp chromatic tuner
04 / Tuner

Tune in harmonica context

Pitch, cents, frequency and matching tab.
The complete Cross Harp Circle of Fifths interface

Positions

Twelve ways into a song.

The Circle of Fifths makes the relationship visible: the harp key stays at the center while each position opens a different playing key and musical character.

  • All twelve playing positions
  • Major key and relative minor at a glance
  • Direct connection to the note map
Explore positions in Harp Lab ↑
Cross Harp harmonica note map

Note map

See the instrument you’re holding.

Blow, draw, bends, overblows and overdraws are arranged by hole. Selected scale tones are highlighted, roots are unmistakable, and playable octave coverage is summarized underneath.

  • Standard, Paddy Richter, Easy Third, Solo, Country, PowerBender and PowerDraw
  • All six Brendan Power Irish Session G/D and Low D/A configurations
  • SHAMROCK Pocket Melodeon and custom ten-hole Seydel configurations
Change the map in Harp Lab ↑
Cross Harp tuner ready to listen

Tuner

A tuner that knows your harp.

Cross Harp identifies the pitch and shows how it belongs to the selected instrument—not just the note name, but the blow, draw or bend that produces it.

  • Chromatic note and cents display
  • Detected and target frequency
  • Matching harmonica tab