BandoChords helps you to find the correct buttons to a particular chord or scale on your bandoneon or your concertina. LAYOUT: The picture shows the layout of keyboard according to: Bass: left side of instrument Trebble: right side of instrument Open bellows Close bellows If a chord is selected, the corresponding buttons are displayed in color: RED: root note BLUE: 3rd ORANGE: 5th YELLOW: additional note CHORDS: - Select chord root (C, C#, ... Bb, B) - Select the type of the triad (major, minor, diminished, augmented, suspended) - Select additional tones (minor seventh, major seventh, ninth, eleventh, sixth) or a power chord (without third) If you're missing additional keyboard-layouts, contact me. SCALES: - Major - Natural minor - Harmonic minor - Melodic minor (desc->natural) - Hexatonic blues - Heptatonic blues - Nonatonic blues - Gypsy major - Gypsy minor - Chromatic - Dorian mode - Phrygian mode - Lydian mode - Mixolydian mode - Hitzaz - Hitzazkiar - Kourd/atar/todi - Pentatonic mode 1 - Pentatonic mode 2 - Pentatonic mode 3 - Pentatonic mode 4 - Pentatonic mode 5 INSTRUMENTS: 144 Einheitsbandonion 142 bandoneon "Rheinische Lage" 152 bandoneon "Rhein. Lage" extended 152 bandoneon "Gebrüder Meinel" 154 bandoneon "Rhein. Lage" Villena 158 bandoneon "Rhein. Lage" Villena 130 bandoneon "Rheinische Lage" 110 bandoneon "Rheinische Lage" 100 bandoneon "Rheinische Lage" 88 bandoneon 64 bandoneon 196 bandoneon Kusserow-system 146 bandoneon Peguri-system 148 bandoneon Manoury-system Bandoneon Atzarin-system 128 Einheitsbandonion 128 Einheitskonzertina 104 concertina Scheffler-system 78 concertina "Chemnitzer Lage" 76 concertina "Chemnitzer Lage" 20-Button C/G anglo concertina 20-Button G/D anglo concertina 30-Button C/G Wheatstone anglo concertina 30-Button C/G Jeffries anglo concertina 30-Button G/D Wheatstone anglo concertina 30-Button G/D Jeffries anglo concertina 40-Button C/G Wheatstone anglo concertina English concertina, simplified MacCann duet concertina 46 Lachenal MacCann duet concertina 81 Wheatstone Jeffries duet concertina 44-Button Crane duet concertina 48-Button Hayden duet concertina Piano reference