Add the copyright date to the 008 fixed filed and to the 260 ‡c
AACR2 Rule 1.4F5
Example:
Bib record:
260 ‡c 1987, p1984.
008 Publication status: t
008 Date 1: 1987
008 Date 2 1984
END, unless this sound material is a re-release
Is this material a re-release?