Key nomenclature is determined by the name of the primary note produced when the key is depressed.
B. All keys normally held open by spring tension have a nomenclature which is a major or minor second beneath the name of the tone hole it covers. Below is a chart listing the tone holes of the German-system bassoon. Refer to the Difficult Fingerings column in this issue for a chart listing the names of the bassoon's keys. I recommend that bassoonists photo-copy these charts to retain for ready reference.