While it looks like the Mola's rear end was simply chopped off, it does not actually lack a tail. Instead, its regular caudal (tail) fin folded away during evolution. It was replaced by a clavus—a pseudocaudal fin formed by the fusing of the dorsal and anal fin rays. This structure acts as a powerful steering rudder.
? = (requires a conductor's artistic decision). Common Mistakes Tracked in the Database
He stood up, his chair scraping loudly against the silence. "Show me."
MOLA also maintains at the National Symphony Orchestra Library in Washington, D.C., ensuring a permanent, physical archive of this invaluable resource. Mola Errata List
: Adding "cautionary accidentals" to prevent common misreadings. 3. Methodology: How the Lists are Compiled Collaborative Research
MOLA Errata List is a vital resource maintained by the Major Orchestra Librarians’ Association (MOLA)
The errata lists are highly structured to ensure that musicians can understand the corrections immediately. A typical entry includes: The specific work. While it looks like the Mola's rear end
or works by Respighi, which are known for their complexity and historical errors. 6. Conclusion
To make corrections fast and scalable, the MOLA Errata List is organized into a highly specific, standardized formula. Every entry is categorized strictly by structural metadata to ensure zero ambiguity during a frantic library session. A standard errata entry tracks the following variables:
Failing to cross-reference performance parts against official errata lists results in immediate, compounding operational issues: 1. Preventing Wasted Rehearsal Salaries This structure acts as a powerful steering rudder
: MOLA often works in conjunction with other resources, such as the Daniels' Orchestral Music database, to provide a complete picture of a work's performance requirements. Policies and Bylaws - MOLA
Current state of the fix (New, In Progress, Ready for Review, Verified, Closed). 2. Common Pipeline Errors Tracked in the Mola Errata List
One of the most striking examples of the need for errata lists is the Beethoven symphonies. These are among the most performed and recorded works in the classical repertoire, yet even they contain errors in the published scores and parts. A forum participant noted: “Fortunately, MOLA (Major Orchestras Library Association) and the Conductor’s Guild both maintain huge databases of known errors in printed music that librarians can (and should) use to make sure rehearsals go smoothly.”
: They log directly into the secure member portal to download the current errata log tailored to that specific edition.
* In Part: Clarinet III, m.134, beat 2: Add crescendo.