Concertinas, Chemnitzers, and Bandoneons - diatonic (bisonoric, push/pull, wechseltonig, etc.)

• Evolution of Button Layouts on Concertinas
• Common Core of Tones Assigned to Concertinas Buttons
• Progressive Addition of Button and Tones on Concertinas
• Interpretting Button Diagrams for Concertinas
• Visual Cues for Distinguishing between Various Large German Concertinas (LGCs)
• Contemporary Anglo Concertina D/G - 20 buttons
• Contemporary Anglo Concertina G/C - 20 buttons
• Contemporary Anglo Concertina D/G - 30 buttons
• Contemporary Anglo Concertina G/C - 30 buttons
• Jeffries Anglo Concertina G/C - 38 buttons
• Bastari Anglo Concertina D/G - 40 buttons
• Early Carsfeld-pitched Large German Concertina - 44 buttons
• American Chemnitzer Concertina - 52 buttons
• John Bernhardt's Diagram of the American Chemnitzer Layout
• German Standard (Einheits) Concertina - 64 buttons
• German Standard (Einheits) Bandoneon - 72 buttons

Chromatic Concertinas (unisonoric, gleichtonig)

• English System
• Bastari Hayden System Concertina

• Cajun Accordion in C - 10 buttons
• Cajun Accordion in D - 10 buttons
• Cajun Accordion in G - 10 buttons
• Vienna Style Accordion in G - 10 buttons

2-Row Button Accordions - diatonic (bisonoric, push/pull, wechseltonig, etc.)

• Vienna Style Accordion in C/F - 21 treble + 8 bass
• Accordion in A/D - 21 treble + 8 bass
• Accordion in G/C - 21 treble + 8 bass
• Accordion in E/A - 21 treble + 8 bass
• Accordion in F/Bb - 21 treble + 8 bass
• Irish Style Accordion in A/Bb - 23 treble + 12 bass (hybrid)
• Irish Style Accordion in B/C - 23 treble + 8 bass (common)
• Irish Style Accordion in C/C# - 23 treble + 8 bass
• Irish Style Accordion in C#/D - 23 treble + 8 bass
• Irish Style Accordion in D/C# (Joe Derrane custom) - 23 treble + 8 bass
• Irish Style Accordion in D/Eb (Hohner bass) - 23 treble + 8 bass
• Irish Style Accordion in D/Eb (Paolo bass) - 23 treble + 8 bass

3-Row Button Accordions - diatonic (bisonoric, push/pull, wechseltonig, etc.)

• Bruno Le Tron Custom FrenchTrad Layout G/C/Helper (2+1) - 33 treble + 12 bass
• "Club" Layout - 30 treble + 8 bass
• "Club" Layout - 31 treble + 8 bass
• "Club" Layout - 33 treble + 12 bass
• TexMex Layout, Gabbanelli Layout in G/C/F - 34 treble + 12 bass
• Most common keys and chord progressions on the GCF Button Accordion
• Chord finder (Gabbanelli G/C/F)
• C Major - PRESS
• C 7 - DRAW
• C# minor - DRAW
• D Major - DRAW
• D minor - DRAW
• D 7 - DRAW
• Eb Major - DRAW
• Eb minor - DRAW
• E Major - DRAW
• E minor - DRAW
• F Major - PRESS
• F Major - DRAW
• F# minor - DRAW
• G Major - PRESS
• G Major - DRAW
• G 7 - DRAW
• G minor - DRAW
• A Major - DRAW
• A minor - DRAW
• A minor - PRESS
• Bb Major - DRAW
• B minor - DRAW
• International (Vienna) Layout in G/C/F - 31 treble + 12 bass
• TexMex Layout, Gabbanelli Layout in A/D/G - 34 treble + 12 bass
• International (Vienna) Layout in A/D/G - 31 treble + 12 bass
• Steirische Layout in A/D/G - 33 treble + 11 bass

Chromatic Button Accordions (unisonoric, gleichtonig), C System (CBA-C)

• C-Major Scale Pattern
• F-Major Scale Pattern
• G-Major Scale Pattern
• A-Harmonic Minor Scale Pattern
• D-Harmonic Minor Scale Pattern
• E-Harmonic Minor Scale Pattern
• Moveable Major Chord
• Moveable Minor Chord
• Moveable Flat 7th ("Dominant 7th") Chord
• Moveable Diminished 7th Chord

• C-Major Scale Pattern
• F-Major Scale Pattern
• G-Major Scale Pattern

Bass Button Systems (unisonoric, gleichtonig)

• Hayden System Free Bass