Noun
an accordion with a right-hand keyboard
Source: WordNetInstruments used are: acoustic guitar (usually six strings, but sometimes seven strings), electric or acoustic bass (sometimes fretless), accordion (sometimes piano accordion, sometimes button accordion), and sometimes some percussion is used. Source: Internet
Right-hand manual systems A Weltmeister piano accordion Different systems exist for the right-hand manual of an accordion, which is normally used for playing the melody. Source: Internet
The most typical accordion is the piano accordion, which is used for many musical genres. Source: Internet
The piano accordion was first played in German-speaking regions, and then spread over Europe. Source: Internet