The piano accordion, like other accordions, typically features multiple sets of reeds that produce different notes. The scales of a piano accordion refer to the arrangement and sequence of notes within these reed sets.
1. Right-hand Scale (Diskant):
- The right-hand side of the piano accordion typically has several rows of buttons. Each row is arranged in a chromatic scale, with the white buttons representing natural notes and the black buttons representing sharps or flats.
- The most common scale on the right-hand side is the C major scale, starting with the C note at the bottom of the lowest row. Other major and minor scales can be played by starting on different buttons and following the chromatic pattern.
2. Left-hand Scale (Bass and Chords):
- The left-hand side of the piano accordion usually consists of two main sections: the bass section and the chord section.
- Bass Section: The bass section typically has buttons arranged in a chromatic scale, similar to the right-hand side, but with a lower pitch range.
- Chord Section: The chord section has buttons or switches that play predefined chords. These chords are often arranged in a way that complements the right-hand melody and provides harmonic accompaniment.
3. Free Bass:
- Some piano accordions have a feature known as "free bass," which offers a wider range of bass notes and more control over the bass line.
- In free bass systems, each button on the left-hand side corresponds to a specific note, allowing the accordionist to play melodies and basslines simultaneously. The arrangement of these buttons usually follows a chromatic scale.
4. Chromatic Buttons:
- Additionally, some piano accordions may include chromatic buttons near the right-hand keyboard to provide access to accidentals (sharps and flats) outside of the main scale.
It's important to note that different piano accordions may have variations in the number of rows and buttons, leading to slight variations in the scales available. The specific scales and layout may depend on the make and model of the accordion.