- 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 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.
- The holograph manuscript of Cimarosa’s Circe.
- Tchaikovsky: Variations on a Rococo Theme, Op.33 (#680204)
- Cobb: I'd Like to Take a Chance with You (#680181)
- Harriman: I'd Like to See You Sunday (#680178)
- Lewis: I'd Like to See the Kaiser with a Lily in His Hand (#680177)
- Mills: I'd Like to Be the Fellow that Girl Is Waiting For (#680176)
- Williams: I'd Like to Be in Texas (#680175)
- Kelley: I'd Like a Little Loving, Now and Then (#680172)
- Armstrong: I'd Like a Girl Like You (#680162)
- Von Tilzer: I'd Leave Ma Happy Home for You (#680159)
- Von Tilzer: I'd Do as Much for You (#680156)
- Ferrari: Canone sopra Redime me Domine (#679686)
- Ferrari: Canone sopra Parce Domine (#679685)
- Borch: Oriental Pictures (4 files)
- Neuendorff: Der Rattenfänger von Hameln (#679642)
- Vivaldi: Violin Concerto in E major, RV 269 (3 files)
- Ferrari: Du meine Seele (#679352)
- Ferrari: Meditazione sopra "Herzliebster Jesu" (#679345)
- Ferrari: La salita al Mirteto (#679343)
- Zhang: Your Sudden Return Brings Me Joy (#679330)
- De Assunção Rondon Mello: Piano Sonata No.2, Op.4 (2 files)
