piano accordion 
noun
An accordion with the melody played on a small vertical keyboard like that of a piano.The two main types of double-action, chromatic accordion are the piano accordion, with a piano-style keyboard in the right-hand manual, and the ‘continental chromatic’ accordion....
- Playing everything from harp to bagpipes (via keyboards, bodhrán, piano accordion, guitar and fiddle) the band played at festivals, parades, shows and more.
- Some were playing piano accordions; there were flutes and harmonicas, violins and hand-held drums that created a thudding, pulsating sound.
- Marsilid
- marsipobranch
- Marsokhod
- Mars Pathfinder
- Marsquake
- Marston Moor, Battle of
- marsupial
- marsupial bone
- marsupial cat
- marsupial frog
- Marsupialia
- marsupialise
- marsupialization
- marsupialize
- marsupial lion
- marsupial mole
- marsupial mouse
- marsupial rat
- marsupial wolf
- marsupium
- Marsyas
- mart
- Martaban, Gulf of
- martabani
- martagon lily