Musical instrument e.g. accordion, for playing notes in e.g. oriental mode, has melodic keyboard with keys for actuating quarter-tone notes and interposed between keys forming minor third, where keys of melodic keyboard are aligned on row

摘要

The instrument has a right-hand melodic keyboard (1) and a left-hand accompaniment keyboard that are connected by bellows. The melodic keyboard has keys for actuating quarter-tone notes and interposed between keys forming a minor third. The keys of the melodic keyboard are aligned on a row. The left-hand accompaniment keyboard has a series of bass buttons (6) for actuating fundamental bass with two voices.