Playbill.com columnist Steven Suskin, author of "The Sound of Broadway Music: A Book of Orchestrators & Orchestrations" (Oxford), will moderate. Admission is free and first come, first served. The separate panels will begin on Oct. 19 at 3 PM with "Broadway Orchestration," featuring Sid Ramin (West Side Story, Gypsy), Jonathan Tunick (Follies, Sweeney Todd), Elliot Lawrence (Bye Bye Birdie, How to Succeed) and Larry Blank (Drowsy Chaperone, Irving Berlin's White Christmas). They will be joined at 6 PM by Harold Prince, John Kander (Cabaret, Chicago), and Sheldon Harnick (Fiddler on the Roof, She Loves Me) for the second program, "The Authors and the Creators."

The Nov. 2 lineup will begin at 3 PM with "Arrangers and Musical Directors," with Paul Gemignani (Into the Woods, Crazy for You), Donald Pippin (Mame, A Chorus Line) and Bruce Pomahac (State Fair, White Christmas). The final panel, at 6 PM, will be "Theatrical Orchestration Today," with Michael Starobin (Sunday in the Park with George, Next to Normal), Bruce Coughlin (Grey Gardens, 9 to 5), Larry Blank (Catch Me If You Can) and Daniel Troob (Beauty and the Beast, Shrek).

The Library is located at Lincoln Center. The panels will be held in the Bruno Walter Auditorium at 111 Amsterdam Avenue. For further information, call (212) 642-0142 or visit www.nypl.org/lpaprograms.