Sonola Piano Accordion 120 Bass Keys 41 Treble Keys Untested. We have listed this accordion for parts as we do not know how to fully test it, the accordion makes a noise but has bot been tested further than that. Used condition, one of the keys sticks when it’s pressed, there are a few scuffs and the case is very worn, there may be some other minor imperfections due to previous use and storage. Please see photos for more information on condition. If you have any questions, ask! Please message if you are in need of a weekend collection. For our reference box: 100 WS3.