For Barthes (1977, p.9) plaisir is, "a pleasure...linked to cultural enjoyment and identity, to the cultural enjoyment of identity, to a homogenising movemenht of the ego." As Richard Middleton (1990, p.261) puts it, "Plaisir results, then, from the operation of the structures of signification through which the subject knows himself or herself; jouissance fractures these structures."
Source
Middleton, Richard (1990/2002). Studying Popular Music. Philadelphia: Open University Press. ISBN 0335152759.