(HHA)

La Resurrezione HWV 47（布装丁）
Oratorio in two parts

Lotario HWV 26（布装丁）
Opera in 3 acts

Lucio Cornelio Silla HWV 10（布装丁）
Opera in 3 acts

Messiah HWV 56（布装丁）
Oratorio in 3 parts

Nine Amen and Halleluja movements HWV 269-277 / three English Hymns HWV 284-286（布装丁）

Nine Sonatas HWV 386-394 [score & parts]（布装丁）

Occasional Oratorio HWV 62（布装丁）
Oratorio in 3 parts

Ode for the Birthday of Queen Anne HWV 74 [critical commentary]

Ode for the Birthday of Queen Anne HWV 74（布装丁）

Oreste HWV A/11（布装丁）
Opera in 3 acts

Organ concertos, op. 4, HWV 289-294
Six Concertos

Organ Concertos, vol. 2（布装丁）
Two Concertos HWV 295 and 296a - Six Concertos op. 7

Orlando HWV 31 [critical commentary]
Opera in 3 acts

Orlando HWV 31（布装丁）
Opera in 3 acts

Ottone HWV 15 (Version of the first performance 1723)（布装丁）
Opera in 3 acts

Parnasso in festa per gli sponsali di Teti e Peleo HWV 73（布装丁）
Serenata in 3 parts

Piano Works, vol. 1-4 [critical commentary]

Piano Works, vol. 1（布装丁）
First Collection of 1720. The Eight Great Suites HWV 426-433; Appendices

Piano Works, vol. 2（布装丁）
Suites de Pièces pour le Clavecin. Second Collection 1733

Piano Works, vol. 3（布装丁）
Individual Suites and Pieces - Part 1 (Nos. 1-22)