Piano Accordion       

            Ideal For Beginners, Is That The Forty Eight Bass, Sometimes With Half Dozen Rows Of Eight, Permitting accompaniment Within The Keys Of BB Shot, F, C, G, D, & A. The Treble Of The Forty Eight And Twelve Basses sometimes Has Twenty Six Keys, Simply Enough For Many Tunes. 

         A Hundred And Twenty Bass With Forty One Treble Keys Is That The Full Size Model, The Bass Provides A Scale, And Every One The Chords, In Half Dozen Rows Of Twenty (Counter Bass, Bass, Then Major Chord, Minor, Seventh, And Diminished). The Seventy Two Bass Sometimes Features A Smaller Thirty Four Note Keyboard, However Retains The half Dozen Row Bass. 

            Two Reeds Of Every Try Ar Tuned To Constant Note, So Creating Every Treble Or Bass Note Out There From Constant key Or Button With Each Directions Of Bellows Movement. Among These Instruments Is That The Squeeze Box, With A Piano-Style Keyboard For The Correct Hand. Its Invention Within The Mid-19th Century Is Attributable Either To The Manufacturer Busson Or To M. Bouton, Each Of France.