- 1 May 2021 - 575,000 scores.
- 30 April 2021 - 180,000 works have scores or parts on Petrucci Music Library.
- 15 April 2021 - 179,000 works have scores or parts on Petrucci Music Library.
- 14 April 2021 - 570,000 scores.
- The first edition of Sophia Dussek's The New German Waltz, published by Chappell.
- The holograph manuscript of Cimarosa’s Il fanatico burlato.
- The first edition of Walter Donaldson's Feeling the Way I Do, published by Irving Berlin.
- The first edition of Strauss’s Schlagobers, suite, TrV 243a, published by Adolph Fürstner.
- The first edition of Coleridge-Taylor’s Papillon, published by Augener.
- Burgess Sr.: A Collection of Lessons (2 files)
- Spindler: Piano Concerto, Op.260 (#698671)
- Lautenschläger: 6 Characteristic Pieces, Op.22 (#698663)
- Haydn: Symphony No.28 in A major, Hob.I:28 (2 files)
- Muldermans: Violin Concertino No.5 (2 files)
- Ponce: 2 Canciones mexicanas (#698644)
- Langey: Mexican Serenade (#698643)
- Schachner: Grosses Concert-Stück (#698642)
- Rimbault: Galopade (3 files)
- Graupner: Der Heilige Geist so recht lehret, GWV 1137/40 (6 files)
- Pérez Pérez: Pandora's Waltz (#698612)
- Di Chiara: Ricercare Mistico per organo antico (#698592)
- Hernández Bellido: Exaerbio Op.40 (#698543)
- Buttino: Anno 2021 Libertà e dittatura (#698541)
- Tavares: Círculo Vicioso (#698478)
- Verotta: Ciaccona per Pianoforte, O.82 (#698472)
- Zhang: After Wandering on the Street (2 files)
- Ferrari: Polka-scherzo (#698373)
- Hernández Bellido: “Salve, Rey de los Judíos” Op.37 (#698371)
- Rondeau: Trumpet Canon & Fugue No.7 (#698246)
