The lists are highly detailed and structured for quick reference. They typically categorize errors by:
: Misprints that can disrupt the harmony or tempo of a piece. Mola Errata List
By using these lists, librarians can save significant rehearsal time—potentially hundreds of hours for complex sets—by making corrections in advance rather than addressing them during expensive ensemble time. Key Features of a MOLA Errata List The lists are highly detailed and structured for
: Identifying which specific edition or reprint (e.g., International Music Company, G. Schirmer) contains the error. Accessibility and Community Effort International Music Company
: Situations where the conductor's score does not match what is printed on the musicians' individual stands.
: Specifying which musician's part needs the update (e.g., 1st Violin, Bassoon II).