The series begins at 8 PM on Satruday, Jan. 18 with Improvs on Stephen Sondheim's Broadway. Dick Hyman will be joined by Billy Charlap and his trio, bassist Peter Washington and drummer Kenny Washington. The evening will feature piano solos and two-piano arrangements from Hyman and Charlap as well as numbers from Charlap's trio. Composer-lyricist Stephen Sondheim has written a plethora of musicals, including A Funny Thing Happened on the Way to the Forum, Company, A Little Night Music, Into the Woods, Merrily We Roll Along, Sweeney Todd, Sunday in the Park with George and Passion. He also contributed lyrics to West Side Story and Gypsy, and his latest musical is titled Gold. Sondheim was celebrated this past summer with all-star stagings of six of his musicals at the Kennedy Center for the Performing Arts.

Tickets for Improvs on Stephen Sondheim's Broadway, priced at $40, are available by calling (212) 415-5500. The 92nd Street Y is located in New York City at Lexington Avenue and 92nd Street.

The remainder of the Jazz series features a salute to Michel Legrand on Feb. 15 and the music of Leonard Bernstein on April 5. The Legrand evening will include performances from pianist Bill Mays, trumpeter Marvin Stamm, guitarist Howard Alden, bassist Jay Leonhart and singer Terry Burrell. The Bernstein program will include saxophonist Bill Easley, pianist Derek Smith and clarinetist Ken Peplowski.