Duet concertina

Duet concertina systems aim to simplify playing a melody with an accompaniment.

[2] Fellow vaudevillian Percy Honri also specialized in the Maccann system.

[3] Despite the predominance of the Anglo concertina, the instrument found a small level of adoption in the Boeremusiek of the Afrikaner people of South Africa, who refer to the Crane and Maccann duet systems as the 5-ry ("five row") and 6-ry ("six row"), respectively.

[4][5] The most common key layouts within the Duet system are: There are a number of other types, far less common: a 1983 article notes patents including "Sharp's 1890, Hank's 1896, Huish's 1901 , and a number of Patents by Dr. Pitt-Taylor between 1916 and 1924.

"[14] Duet concertina designer Brian Hayden has also noted the Linton, Chidley, and Piano systems, the last including variants such as the Rust system and Jedcertina.