Level 5 · Polyphony, orchestration and the digital accordion

free-bass counterpoint, fine bellows dynamics, registration as orchestration, and the Roland FR voices

At the summit the accordion is a one-person orchestra: free-bass counterpoint, bellows dynamics and register changes together — and on the Roland FR its organ voices reconnect to the organ-tutor syllabus.

What you learn

• Two- and three-voice polyphony with free bass — the left hand carries an independent contrapuntal line (Bach transcriptions sit naturally here).
• A finely-graded dynamic curve shaped entirely by bellows pressure, from a whisper to full organ.
• Registration used as orchestration: changing treble and bass registers mid-phrase to recolour a repeat.
• Bellows-shake and detailed articulation integrated into virtuoso passagework.
• On the Roland FR, the orchestral and organ voice sets extend the instrument — the organ emulation overlaps directly with the pedagogy of the organ tutor (registration, sustained voices, manual independence).

Grounded in: Roland FR digital-accordion register and free-bass documentation — for register/orchestral voicing, the free-bass converter, and organ-emulation crossover. source

Note: a method-grounded technique curriculum (no score corpus for this instrument); levels are graded skills, not pieces.