I was surprised when I saw this was not on the list. We have lots of those (see http://musicbrainz.org/tag/format-cd-r for a sample) and I would say it is distinctive enough to have it as an option under CD (or, if not, to have another way of indicating it).
-- Nicolás Tamargo de Eguren _______________________________________________ MusicBrainz-style mailing list MusicBrainz-style@lists.musicbrainz.org http://lists.musicbrainz.org/mailman/listinfo/musicbrainz-style