Adam Cooper, originator of the lead role of "The Swan" in Matthew Bourne's theatrical re-interpretation of the classic ballet Swan Lake, will dance his final step in that role Dec. 19.

Replacing Cooper will be principal dancer with the American Ballet Theatre, Keith Roberts. Roberts, like Cooper before him, will alternate performances with Will Kemp.

The flamboyant dance/theatre show opened at Broadway's Neil Simon Theatre Oct. 8, with men dancing the swan roles usually assigned to ballerinas. The show is co-produced by Cameron Mackintosh and Katharine Dore.

Radically different from traditional stagings, this Swan Lake, influenced by contemporary stage musicals, has scenes not only in an opera house and the prince's bedroom, but in "A Seedy Club," where characters include a Pop Idol, East End Gangsters and a Pimp.

According to "The Theatre List" newsletter (put out by the Society of London Theatre), the "Adventures In Motion Pictures" troupe has made its reputation "through the subversion of traditional dance forms with productions of The Nutcracker and Highland Fling (based on La Sylphide)." The latter was revived by the company in late February following their Swan Lake engagement. Other pieces by the troupe include Does Your Crimplene Go All Crusty When You Rub? (1987-90) and The Percys Of Fitzrovia (1991-93). Another recent production, also staged by Bourne, was an adaptation of Cinderella , staged at the Piccadilly Theatre in London. Tickets for the Broadway production, performing through Jan. 23, 1999 are on sale via Ticketmaster at (212) 307- 4100.