SofiaMari 32 Key 32 Bass Piano Accordion. Keyboard 32 Notes F-C, Four Bass Rows, Eight notes each, Fundamental Bass, Major, Minor and 7th Chords. New, Fitted NAC Roll Away Trolly Case Designed for Maximum Protection, featuring a Telescoping Handle. New, 2.5" Wide Leather Straps with Harness, Designed for Maximum playing comfort. New grill with improved switch plate design.