Nat Adderley, 68, the jazz cornetist who made nearly 100 recordings and whose compositions included the much-recorded "Work Song" and "Sermonette," died of complications of diabetes Jan. 2 in Lakeland, Fla., where he lived.

Mr. Adderley, younger brother of late bebop saxophonist Julian "Cannonball" Adderley, had been in declining health since losing his right leg to diabetes in 1997. That year he was inducted into the Jazz Hall of Fame in Kansas City, Mo.

Mr. Adderley played cornet and occasional trumpet on many albums with his brother, whose famed quintet recorded Nat Adderley's "Jive Samba," Hummin'," and other compositions that helped popularize the "soul jazz" sound during the 1960s. A recording of "The Work Song" by Herb Alpert & The Tijuana Brass reached No. 18 on the pop charts in 1966. In all, it was recorded by a dozen performers, from Count Basie to Conway Twitty.

The younger Adderley started out in an Army band in the early 1950s, then played with vibraphonist great Lionel Hampton's band for two years.

But he and his brother, both natives of Tampa, took the New York jazz community by storm in 1955 when they sat in with a top-notch combo comprising bassist Oscar Pettiford, drummer Kenny Clark and pianist Horace Silver at Cafe Bohemia, a Greenwich Village nightclub.

Soon after, the Adderley brothers were playing on their first album and went on to form their quintet in 1956.

The brothers went their separate ways in the late 1950s, with Cannonball joining Miles Davis's group and Nat playing with J.J. Johnson and Woody Herman. The quintet was reunited in 1959 and the brothers remained playing together until Cannonball Adderley's death from a stroke in 1975.

Later that year, the Adderleys' concept album "Big Man--The Legend of John Henry," a jazz musical composed by the brothers, was released on the Fantasy label. The concert version of the musical, starring Joe Williams, premiered in 1976 at Carnegie Hall as a tribute to Cannonball, and a full stage production, which played the Kennedy Center, opened in 1986.

Following his brother's death, Nat Adderley continued to record and tour with his own quintet. One of his best known recordings from later in his career was the 1990 album "The Old Country" (Enja). He joined the faculty of Florida Southern College in 1996 as an artist in residence and toured with singer Luther Vandross.

Survivors include his wife, Ann Adderley of Lakeland; a daughter, Alison Pittman of Palm Bay, Fla.; and a son, Nat Adderley Jr., a keyboardist who is a longtime musical director for Vandross, of West Orange, N.J.; and five grandchildren.

CAPTION: Jazz Hall of Fame inductee Nat Adderley, here in 1997, made nearly 100 recordings.