Willoughby; Bear Sharp, Liza (ed.); General Idea; Schley, Van; Darling, Lowell; is currently considered a "single author." If one or more works are by a distinct, homonymous authors, go ahead and split the author.
Willoughby; Bear Sharp, Liza (ed.); General Idea; Schley, Van; Darling, Lowell; is composed of 1 name.