Mimicking the layout of Hohner's iconic piano accordions, this intuitive virtual accordion is easy to play and sounds exactly like the real instrument. The Hohner Piano Accordion has a two-octave 24-key treble keyboard and 36 bass/chord buttons. Touch the "?" button to toggle the chord button name display. Touch the "i" button to show the volume controls where you balance the volume of the treble, bass, and chords independently. Touch the Hohner logo to visit the Hohner website. You're really going to want to plug this into a big amplified speaker to truly appreciate the sound! The Hohner Piano Mini Accordion app allows musicians to practice chord combinations, scales, and songs on-the-go.