noun
melodica; keyboard harmonica
A free-reed instrument with a keyboard, played by blowing through a mouthpiece. Pianica is a trademarked name often used generically in Japan.
小学生のとき、音楽の授業で鍵盤ハーモニカを吹いた。
When I was in elementary school, I played the melodica in music class.
Pianica is a specific brand of melodica, but in Japan it is often used as a generic term for the instrument, similar to 鍵盤ハーモニカ.
Compound of 鍵盤 (keyboard) and ハーモニカ (harmonica). The instrument was developed in the mid-20th century and became widely used in Japanese music education.