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Jalal Mansur Nuriddin, one of the original Last Poets and the grandfather of rap, poses in Paris, France.Alastair Miller/Bloomberg News

Jalal Mansur Nuriddin, who helped establish the foundation for hip-hop as a member of the Last Poets and in his own solo work, died on June 4 at a hospital in Atlanta. He was 73.

The cause was lung cancer, said Umar Bin Hassan, a fellow member of the Last Poets.

The Last Poets emerged in Harlem at the end of the 1960s, reciting rhythmic verses over conga drumming and speaking directly to the disenfranchised youth of New York’s black community. The group’s poetry pushed revolution and self-determination, while admonishing listeners about survival in an environment defined by racialized poverty.

With his high, declamatory voice and his way of milking words for their sonic potential as well as their meaning, Mr. Nuriddin stood out. He delivered some of the group’s most urgent and incisive verses, and although the Last Poets’ lineup rotated over time, he performed with the group well into his later years.

By then, he had come to be widely known as the “grandfather of rap,” a laurel he proudly accepted.

With the release of their debut album, The Last Poets, in 1970, the group became an underground sensation, reaching No. 29 on the Billboard album chart and staying on the chart for 30 weeks despite being rarely played on radio.

As the civil-rights movement lost steam and gave way to the separatism of Black Power, the group spoke from a standpoint of disillusionment, although with vigorous attitude. In On the Subway, Mr. Nuriddin rapped:

Me knowing me

Black proud and determined to be free

Could plainly see my enemy yes

Yes, yes, I know him

I once slaved for him body and soul

And made him a pile of black gold

Off the sweat of my labor he stole

But his game, his game is old

We’ve broken the mental hold

Things must change

There’s no limit to our range

Mr. Nuriddin may have made his greatest contribution to the future of popular music as a solo artist. In 1973, using the pseudonym Lightnin’ Rod, he released Hustlers Convention, an album that unified the black tradition of toasts – rhymed stories about the heroic exploits of renegades and rebels, and the battles between them – with the contemporary sound of street-wise funk.

Rapping in a crackling growl, Mr. Nurridin told an extended story of two young men surviving on the New York streets, with lush backbeats provided by Kool and the Gang and A-list session musicians.

On Sport, the album’s opening track, he wove a boasting first-person narrative about street hustling, cool and deliberate but adamantly paced. Aside from the improvising horn and guitar lines that swept across the album, this represented almost the exact sonic and lyrical blueprint that rappers such as Melle Mel and Eazy-E would pick up on a decade later, when they released some of the first major hip-hop singles, using DJs instead of live bands.

Mr. Nuriddin arrived at the idea to put a funk band behind his verses with the producer Alan Douglas, who had recorded the Last Poets’ first few albums. Mr. Nuriddin said he had meant the album’s contents as a cautionary tale.

“I wrote the album so people would sit up, take notice and not become one of the hustlers, card cheats, prostitutes, pimps and hijackers I rapped about,” he said in a 2015 documentary about Hustlers Convention.

In the documentary, the rapper Chuck D. of Public Enemy called the album a “verbal bible” for understanding the culture of the New York streets.

Mr. Nurridin was born Lawrence Padilla on July 24, 1944, in Brooklyn and grew up in a housing project there. Information on who he leaves was not immediately available.

“I had this need to express myself,” Mr. Nuriddin said of his childhood. “Everything was bottled up – not just within myself, but in the African-American people in general. So I began to write poetry.”

By his mid-20s, having briefly changed his name to Alafia Pudim, he was becoming known for his facility with words, and for speaking in spontaneous rhyme. (He began going by Jalaluddin Mansur Nuriddin in 1973.) He soon befriended members of the Last Poets, a group with a loose membership that had started in 1968 on Malcolm X’s birthday. He eventually became a core member.

Mr. Douglas got wind of the Last Poets and released their first album on his label, Douglas Records. But radio and television avoided the group, partly because of its unflinching attacks on institutional racism, and partly because of its use of words from the African-American lexicon that are considered objectionable even today.

Record sellers often slapped cautionary stickers onto the Last Poets album in yet another moment that presaged the conflicted relationship hip-hop would have with the mainstream.

Mr. Nuriddin continued performing under the Last Poets name for many years, typically alongside Suliaman El-Hadi. Mr. Nuriddin is featured on Last Poets recordings including the influential This Is Madness (1971), the sonically experimental Chastisement (1973) and Scatterap/Home (1993).

NEW YORK TIMES NEWS SERVICE

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