Right hand with 3 voices and 3 stops allowing 5 different sounds:

• 1 voice: concertina
• 2 voices: dry, swing or musette tuned (up to accordionist request)
• 3 voices: double medium + single low octave reed 
• 2 voices: bandoneon (single medium + single low octave reed) 
• 1 voice: single low reed 

Left-hand with 2 stops:

• 1 stop to remove thirds.
• 1 stop to remove the low reed.

Lorelei diatonic accordion, “Mr Le Comte” (2 voices)

Lorelei diatonic accordion, “Bulgare” (2 voices, bandoneon)

Lorelei diatonic accordion, 'Valse du boucher' (3 voices)