I think they excist, but it's no compilation. Yes, the "C.P." and "C.S." themselves do exist as "tracks", but they have never been released as "real" compilations on CD, so there is no possibility to buy them. What I know is, that several years ago, Gigi has given some copies (probably on "self-made" CDs) to fans, who went to one of his live gigs. There is no gurarantee from my side for this info, it's just my knowledge. Never heard about a SE promo release