6.0B. Sources of information
For compact discs and cassettes, consider information that can be read through the closed container (including information on the front cover of a booklet inserted in the container) to be on the container.
For sound recordings containing two works of the same type by one composer without a collective title on the label(s), do not consider as a collective title a title on the container or accompanying material that is made up of the name of the type plus one or more of the following identifying elements for the two works: serial number, opus number, thematic index number, key.
Do not consider to be collective titles:
On container: Piano concertos no. 25, K. 503, no. 26, K. 537
On container: Sonatas no. 4, op. 7, and no. 11, op. 22
On container: Symphonies nos. 88 and 104 (London)
Consider to be collective titles:
On container: The violin concertos / Serge Prokofiev
On container: Les deux sonates pour violoncelle et piano
On container: Ballets / Igor Stravinsky
(Contains Apollo and Orpheus)
See also: