Barker lever References Barker lever music Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: keyboard instrument/ Stop and key mechanisms…builder Aristide Cavaillé-Coll employed the Barker lever almost exclusively from 1840 on. Read More…builder Aristide Cavaillé-Coll employed the Barker lever almost exclusively from 1840 on. Read More