| Keyword | Excerpt (click on keyword for complete article) |
| 1867 system | key systems for the flute.The 1867 system was a modified version of the Boehm system, patented by by Rudall, Carte & Co. in 1867. |
| Afghanistan | |
| Albert system | Key system for the clarinet. The Albert system was the most common system during the late 19th and early 20th C. and is still found today although it's mostly been replaced by the Boehm System. |
| Album | A record, or a collection of records in one package. |
| Aliquot strings | See Sympathetic strings. |
| Archet | See Bow. |
| Arco | See Bow. |
| Ärmelschoner | See Armrest. |
| Armrest | Most banjoa and some mandolins are fitted with an armrest to keep the player's arm away from the instrument's body. |
| Arr. | See Arrangement. |
| Arrangement | A re-write of an existing piece of music into a different style or combination of instruments voices. Often shortened to "arr." |
| Baermann-Ottensteiner system | Key system for the clarinet, developed by Carl Baermann and Georg Ottensteiner in 1860.The Baermann-Ottensteiner system was based on the Müller system but with several additions.It was very commo |
| Bånd (2) | See Fret. |
| Baritone (2) | Musical instrument in the range between tenor and bass (e.g. baritone saxophone.) |
| Bass (2) | The lowest part in a composition. |
| Bass clef | |
| Bass & lead | |
| Benedicamus Domino | Lat.: "Let us praise the Lord". A part of the Latin mass |
| Berlin State Opera | Opera house in Berlin. |
| Bocal | On some double reed instruments (e.g. the modern bassoon) the reeds are placed at the end of a piece of metal tubing, called a bocal, rather than directly onto the instrument's body. |
