- 15 April 2021 - 179,000 works have scores or parts on Petrucci Music Library.
- 14 April 2021 - 570,000 scores.
- 1 April 2021 - 22,000 composers.
- 31 March 2021 - 178,000 works have scores or parts on Petrucci Music Library.
- The first edition of Walter Donaldson's Dixie Highway, published by Jerome Remnick & Co.
- The first edition of Strauss’s Piano Sonata, Op.5, published by Aibl.
- The first edition of Coleridge-Taylor’s O Ye that Love the Lord, published by Novello.
- The first edition of Sophia Dussek's 3 Italian Airs with Variations, published by Naderman.
- The holograph manuscript of Cimarosa’s I due supposti conti.
- Nowicki: Piosennik Ludwika Nowickiego (10 files)
- Dvořák: Bagatelles, Op.47 (4 files)
- Sandré: 2 Morceaux, Op.53 (#693360)
- Sandré: 3 Morceaux, Op.52 (3 files)
- Hollaender: Suite, Op.21 (6 files)
- Sullivan: Iolanthe (#693346)
- Boettger: Monteaux Noirs Lancers (#693345)
- Wiegand: Heart and Hand Lancers (2 files)
- Cornelius: Der Cid (2 files)
- Anonymous: Desterrado (10 files)

- Hernández Bellido: Poema Harmónico Op.22 (4 files)
- Manookian: Euphonium Sonata (#692935)
- Taverner: In Nomine (2 files)
- Wilkes: To Dream Again (2 files)
- Gardner: The Star-Spangled Banner (#692616)
- Balparda de Carvalho: Padroeira, Op.12 (#692609)
- Respighi: Antiche danze et arie per liuto, Suite No.2 (#692526)
- Hernández Bellido: Weberniana op.20 (#692462)
- Mahler: Rückert Lieder (3 files)
- Van der Sommen: CelloSonate (#692207)
