| A pelayo que desmayo | [anonymous] | | | 1:28 | |
| A Quart a Penny | [anonymous] | | | 1:14 | |
| A qui Fortune - rondeau | [anonymous] | | | 6:05 | |
| A Scottish Dance | [anonymous] | | | 0:56 | |
| A Scottish Tune | [anonymous] | | | 1:53 | |
| A Solis Ortus Cardine (Christmas) | [anonymous] | | | 3:48 | |
| A tart peut on ceur dolent conforter | [anonymous] | | | 6:29 | |
| A touz jour, sanz remanoir | [anonymous] | | | 1:26 | |
| A Toy | [anonymous] | | | 1:06 | |
| A Toy | [anonymous] | | | 0:31 | |
| A Toy | [anonymous] | | | 0:50 | |
| A Toy | [anonymous] | | | 1:02 | |
| A Toye | [anonymous] | | | 0:53 | |
| A Toye | [anonymous] | | | 0:23 | |
| A Toye | [anonymous] | | | 0:29 | |
| A Toye | [anonymous] | | | 0:52 | |
| A Toye | [anonymous] | | | 0:31 | |
| A Toye (The Friar and the Nun) | [anonymous] | | | 0:54 | |
| A Toye (up tails all) | [anonymous] | | | 0:41 | |
| A Volta | [anonymous] | | | 0:57 | |
| A vous, Tristan, amis verai | [anonymous] | | | 2:51 | |
| A Widow’s Son | Clowns feat. Anonymous Host of Casefile and Feine Sahne Fischfilet | | | 8:40 | |
| Aan de oever van de IJssel | [anonymous] | | | 1:02 | |
| Ab lo cor trist environat d'esmai | [anonymous] | | | 4:05 | |
| Abenamar | [anonymous] | | | 5:20 | |
| Abend wird es wieder | [anonymous] | | | 1:25 | |
| Aber heidschi bumbeidschi | [anonymous] | | | 3:17 | |
| Abide, I Hope it Be the Best [English, 15th Century] | [anonymous] | | | 3:30 | |
| Abinu Malkenu | [anonymous] | | | 2:19 | |
| Abracadabra,malle,ouvre toit | [anonymous] | | | 10:32 | |
| Absolve - Requiem | [anonymous] | | | 2:17 | |
| Absolve, Domine | [anonymous] | | | 2:25 | |
| Abspann | Anonymus | | | 1:45 | |
| Abspann | Anonymus | | | 0:18 | |
| Abspann | Anonymus | | | 1:25 | |
| Acalanto do Maraca (Dors mon enfant) | [anonymous] | | | 1:16 | |
| Acaso são estes | Anonymous, Rosemeire Moreira & Guilherme de Camargo | | | 4:24 | |
| Acclamations Sung at the Prokypsis of the Emperor | [anonymous] | | | 5:08 | |
| Ach du mein liebes Jesulein | [anonymous] | | | 1:03 | |
| Across the Border: Gilderoy | [anonymous] | | | 1:34 | |
| Across the Border: Gilliecranckie | [anonymous] | | | 1:50 | |
| Across the Border: The Clean Country Way | [anonymous] | | | 2:09 | |
| Across the Border: The Miller of the Dee | [anonymous] | | | 1:42 | |
| Across the Channel: All in a Garden Green | [anonymous] | | | 2:00 | |
| Across the Channel: Chi Passa | [anonymous] | | | 2:18 | |
| Across the Channel: La Folia (Variation by McGibbon) | [anonymous] | | | 2:29 | |
| Across the Channel: Quatre Branles | [anonymous] | | | 1:44 | |
| Ad mortem festinamus | [anonymous] | | | 5:59 | |
| Ad superni regis decus | [anonymous] | | | 3:13 | |
| Ad te levavi | [anonymous] | | | 3:19 | |
| Adagio (Mozart) | [anonymous] | | | ?:?? | |
| Adam-ondi-Ahman | [anonymous] | | | ?:?? | |
| Adana Çiftetellisi | [anonymous] | | | 5:21 | |
| Adelita | [anonymous] | | | 1:18 | |
| Adeste Fideles | [anonymous] | | | 2:26 | |
| Adesto (transcription d'un motet) | Codex de Robertsbridge | | | 3:28 | |
| Adevhu – Hunters’ Drumming | [anonymous] | | | 2:15 | |
| Adevhu – Hunters’ Drumming | [anonymous] | | | 2:58 | |
| Adieu mes amours (Improvisation) | Anonyme | | | 1:16 | |
| Admirabilis Splendor | [anonymous] | | | 4:04 | |
| Admonitio | [anonymous] | | | 1:37 | |
| Adoleta | [anonymous] | | | 0:59 | |
| Adon Haselihot (Traditional Sephardic, pre-1492) | [anonymous] | | | 3:20 | |
| Adoramus te | Anonimo (Cancionero Montecassino) | | | 2:24 | |
| Adoramus te Domine (C. M. Montecassino No. 4) | Anonyme | | | 1:20 | |
| Adoramus te Domine (C. M. Montecassino No. 4) | Anonyme | | | 1:20 | |
| Adorate Sanctae Crucis: Ecce Lignum Crucis | [anonymous] | | | 2:56 | |
| Adoremus | [anonymous] | | | 1:40 | |
| Adorna Thalamum (Erfurt, 1301) [Arr. C. Haas] | [anonymous] | | | 3:00 | |
| Adsis Placatus | [anonymous] | | | 2:30 | |
| Advent: Blomstre som en rosengård (DDS 78) | [anonymous] | | | 5:49 | |
| Advent: Glæden hun er født i dag (DDS 107) | [anonymous] | | | 2:47 | |
| Advent: Gør døren høj (DDS 84) | [anonymous] | | | 4:09 | |
| Advent: Hjerte, løft din glædes vinger (DDS 114) | [anonymous] | | | 4:05 | |
| Aelfeah adest, Ordbirhtus adest, Wulfsinus et Aelfric | [anonymous] | | | 1:49 | |
| Aerial threat: a repeated low, dull cluck-cluck-cluck warns of aerial predators and threats | Chipmunk | | | 1:32 | |
| Aetas carmen melodiae (PC 1582) | [anonymous] | | | 1:22 | |
| Aften: Sig månen langsomt hæver (A cappella) (DDS 769) | [anonymous] | | | 4:44 | |
| Agence Tous Risques | [anonymous] | | | 1:31 | |
| Aggressive chatter: used when combating others of its kind | House wren | | | 0:06 | |
| Agincourt Carol, "Deo Gracias Anglia" [English, 15th Century] | [anonymous] | | | 4:31 | |
| Agnus - O Ihesu Salvator | [anonymous] | | | 2:57 | |
| Agnus "Du mont" | [anonymous] | | | 1:12 | |
| Agnus Dei | [anonymous] | | | 3:19 | |
| Agnus Dei | [anonymous] | | | ?:?? | |
| Agnus Dei | Anonymous | | | 1:42 | |
| Agnus Dei (Christmas) | [anonymous] | | | 1:01 | |
| Agnus Dei (from the Missa pro defunctis) | [anonymous] | | | 0:55 | |
| Agnus Dei Christi miseracio | [anonymous] | | | 2:39 | |
| Agnus Dei III | [anonymous] | | | 1:56 | |
| Agnus Dei, O Jhesu Salvator | Ensemble Gilles Binchois, Dominique Vellard, Anonymous | | | 3:29 | |
| Agnus I (Lux et Origo, Modo IV) | [anonymous] | | | 1:23 | |
| Agressive trill: a sputtering alarm call given by a bird chasing predator from nest | Killdeer | | | 0:15 | |
| Ah de las mazmorras | Anonyme | | | 3:44 | |
| Ah lasso, a quante fier' la sete toglio | [anonymous] | | | 2:24 | |
| Ah! Laissez‐moi rêver, H. 441 | Marc‐Antoine Charpentier, Anonymous, Deborah Cachet & Sofie Vanden Eynde | | | 3:29 | |
| Ah! vous dirai-je, maman | [anonymous] | | | 1:03 | |
| Ai Las E Que-m Fan Mei Uelhs Sordel Da Primavera D’Amore | [anonymous] | | | 7:46 | |
| Ai sachut que voz siatz acochada | [anonymous] | | | 2:18 | |
| Ainsi font, font, font | [anonymous] | | | 0:33 | |
