Choirbook 2a was an early-Tudor choirbook dismantled in the early 1600s (its history and designation are treated at length in Williamson 2010). This source comprises the following dislocated remnants:
- i. Oxford, New College, [printed book] Ω.14.5: contains fragments of an anonymous Stabat mater and William Cornysh's Salve regina, E19: DIAMM images.
- ii. Oxford, New College, [printed book] C.1.2: apparently contains part of Lambe's O maria plena gracia, E3. DIAMM images.
- iii. Oxford, All Souls College, MS 330, f. 18r-v: also contains fragment of E3. DIAMM images.
- iv. Chester, Cheshire and Chester Archives, ZCX/1, f. 17: also contains a fragment of E3 and a section of Banaster's O maria et elizabeth, E35. DIAMM images.
