Metodo per Fisarmonica Diatonica (Organetto). 1/2 file al canto, 2/4/8 bassi e Fisarmonica Diatonica 3 file al canto,12/18 bassi : Savin Mauro: Amazon.it: Libri
Two bass accordion "Della Noce" in F, 12 keys, PENNESE model - YouTube
Accordionshop - organetto Carboni 12 bassi 33 tasti in II