Mola Errata List Jun 2026

Founded by library professionals from major symphony orchestras, works to streamline the preparation of sheet music worldwide.

Without the MOLA database, a librarian would have to manually compare every single printed page against the conductor's full master score—a process taking dozens of hours per piece. Mola Errata List

Direct visual evidence of the error, often annotated with digital redlines. Music engraving is a deeply complex art form,

Music engraving is a deeply complex art form, and errors slip through even the most rigorous publishing houses. The Major Orchestra Librarians' Association logs a wide variety of systemic printing oversights, including: When a librarian at the Berlin Philharmonic or

What makes the MOLA Errata List unique is its collaborative nature. It is a living database built on the collective intelligence of the world’s most prestigious musical institutions. When a librarian at the Berlin Philharmonic or the Chicago Symphony identifies a new error in a contemporary work, like Aaron Copland's The Red Pony , they contribute that finding to the community.

Explicitly details what is misprinted and what must be fixed. Eighth-rest missing; note should be F# instead of E

The QA tester or technical artist spots an issue, takes an annotated screenshot, maps it to the asset ID, and updates the Mola Errata List status to New .