ATLANTA — James Brown, the dynamic, pompadoured "Godfather of Soul," whose rasping vocals and revolutionary rhythms made him a founder of rap, funk and disco as well, died early today, his agent said. He was 73.

Brown was hospitalized with pneumonia at Emory Crawford Long Hospital yesterday and died around 1:45 a.m. today, said his agent, Frank Copsidas of Intrigue Music. Longtime friend Charles Bobbit was by his side, he said.

Copsidas said Brown's family was being notified of his death and that the cause was still uncertain. "We really don't know at this point what he died of," he said.

Along with Elvis Presley, Bob Dylan and a handful of others, Brown was one of the major musical influences of the past 50 years. At least one generation idolized him and sometimes openly copied him. His rapid-footed dancing inspired Mick Jagger and Michael Jackson among others. Songs such as David Bowie's "Fame," Prince's "Kiss," George Clinton's "Atomic Dog" and Sly and the Family Stone's "Sing a Simple Song" were clearly based on Brown's rhythms and vocal style.

His hit singles include such classics as "Out of Sight," "(Get Up I Feel Like Being a) Sex Machine," "I Got You (I Feel Good)" and "Say It Out Loud — I'm Black and I'm Proud," a landmark 1968 statement of racial pride.

He won a Grammy award for lifetime achievement in 1992, as well as Grammys in 1965 for "Papa's Got a Brand New Bag" (best R&B recording) and for "Living In America" in 1987 (best R&B vocal performance, male.) He was one of the initial artists inducted into the Rock and Roll Hall of Fame in 1986, along with Presley, Chuck Berry and other founding fathers.

He triumphed despite an often unhappy personal life. Brown, who lived in Beech Island near the Georgia line, spent more than two years in a South Carolina prison for aggravated assault and failing to stop for a police officer. After his release in 1991, Brown said he wanted to "try to straighten out" rock music.

From the 1950s, when Brown had his first R&B hit, "Please, Please, Please" in 1956, through the mid-1970s, Brown went on a frenzy of cross-country tours, concerts and new songs. He earned the nickname "The Hardest Working Man in Show Business."

With his tight pants, shimmering feet, eye makeup and outrageous hair, Brown set the stage for younger stars such as Michael Jackson and Prince.

Born in poverty in Barnwell, S.C., in 1933, he was abandoned as a 4-year-old to the care of relatives and friends and grew up on the streets of Augusta, Ga., in an "ill-repute area," as he once called it. There he learned to wheel and deal.

By the eighth grade in 1949, Brown had served 3 1/2 years in Alto Reform School near Toccoa, Ga., for breaking into cars.

While there, he met Bobby Byrd, whose family took Brown into their home. Byrd also took Brown into his group, the Gospel Starlighters. Soon they changed their name to the Famous Flames and their style to hard R&B.

In January 1956, King Records of Cincinnati signed the group, and four months later "Please, Please, Please" was in the R&B Top Ten.

While most of Brown's life was glitz and glitter, he was plagued with charges of abusing drugs and alcohol and of hitting his third wife, Adrienne.

Adrienne Brown died in 1996 in Los Angeles at age 47.

More recently, he married his fourth wife, Tomi Raye Hynie, one of his backup singers. The couple had a son, James Jr.

Two years later, Brown spent a week in a private Columbia hospital, recovering from what his agent said was dependency on painkillers. Brown's attorney, Albert "Buddy" Dallas, said the singer was exhausted from six years of road shows.