Irish folk-singer Tommy Makem, best known for his years with the Clancy Brothers -- and for his eponymous Manhattan pub -- will offer his Off-Broadway evening of Irish history and music, invasions and legacies, an extra week. Originally set to play Irish Repertory Theatre Sept. 27-Oct. 9, the run will now last until Oct. 14.

Makem's show promises to tell the story of the Irish people through "music, song and poetry." A solo artist for several years now, Makem came to prominence as a member of the Irish folksinging group, The Clancy Brothers. Appearances on "The Ed Sullivan Show" and connections to the mid-60s Greenwich Village folk scene enhanced the group's reputation in America. Makem sang and penned such standards as "Four Green Fields" and "Farewell to Carlingford."

Irish Rep artistic director Charlotte Moore will stage the concert, which features a set by Klara Zieglerova and lighting by Jason A. Cina. Musicians Ron D'Adario and Bob Mastro will also be featured in the show, according to production spokespersons.

For tickets and information on invasions and legacies call (212) 727 2737.

-- By David Lefkowitz and Robert Simonson