The Music Library Association has responded to a lot of these, shall we say, less-than-clear areas of RDA with a set of recommended best practices for cataloging. This document is updated periodically, but I believe the most recent version can be found here:
The document includes copious examples which can be most helpful in cases like these.
(Ms.) Andrea Cawelti
Ward Music Cataloger
Cambridge, MA 02138
Phone: (617) 495-8060
FAX: (617) 495-1376
E-mail: [log in to unmask]
Thanks to those of you who contributed to this discussion. I should have been clearer myself, and entitled the original message "Choice of main entry". I don't believe it's clear at all in RDA what's to be done about that. But in a MARC record, there's a main entry, either field 1XX or field 245. Formulation of an AAP is a different matter. Sometimes it's tricky to keep the two distinct, particularly with MARC fields like 245 serving as both transcription and as an access point.
Eventually I hope to have another draft for consideration. - Ian
Cataloging and Metadata Services Librarian
George Mason University