- 4 March 2021 - 176,000 works have scores or parts on Petrucci Music Library.
- 21 February 2021 - IMSLP now has 66,000 recordings.
- 17 February 2021 - 175,000 works have scores or parts on Petrucci Music Library.
- 11 February 2021 - 555,000 scores.
- The holograph manuscript of Cimarosa’s La Cleopatra.
- The first edition of Gussie Davis's Irene, Good Night, published by Geo. Propheter.
- The first edition of Strauss’s 6 Lieder, Op.67, published by Bote & Bock.
- The first edition of Coleridge-Taylor’s Life and Death, published by Augener.
- The first edition of Sophia Dussek's Favorite Airs, Book 4, published by Monzani & Co.
- Korngold: Sinfonietta, Op.5 (18 files)
- Omid: String Trio No.4 (4 files)
- Omid: Ethnics before profit 9 (#680348)
- Anonymous: Et in terra (3 files)
- Caldini: Sonatina in canone, Op.91b (#680343)
- Holstein: Der Haideschacht, Op.22 (#680341)
- Von Tilzer: I'll Be There, I'll Be There, Mary Dear (#680340)
- Turk: To-Morrow (#680339)
- Solman: I'll Be Home at Harvest Time (#680338)
- Donaldson: I'll Be Happy When the Preacher Makes You Mine (#680337)
- Ferrari: 10 Piccoli pezzi contemporanei (2 files)
- Colburn: Ballo per Valente (#680307)
- Fine: Trio for Violin, Viola, and Piano (#680128)
- Omid: For Ida Lupino 1 - I (#680047)
- Dušek: Gradation for Organ (#679908)
- De Bleser: 6 Octotonic Studies (#679900)
- Roberts: The 24 Nocturnes (#679719)
- Ferrari: Canone sopra Redime me Domine (#679686)
- Ferrari: Canone sopra Parce Domine (#679685)
- Borch: Oriental Pictures (4 files)
