Question:
Walter "Walt" Whitman (; May 31, 1819 - March 26, 1892) was an American poet, essayist, and journalist. A humanist, he was a part of the transition between transcendentalism and realism, incorporating both views in his works. Whitman is among the most influential poets in the American canon, often called the father of free verse.
Whitman claimed that after years of competing for "the usual rewards", he determined to become a poet. He first experimented with a variety of popular literary genres which appealed to the cultural tastes of the period. As early as 1850, he began writing what would become Leaves of Grass, a collection of poetry which he would continue editing and revising until his death. Whitman intended to write a distinctly American epic and used free verse with a cadence based on the Bible. At the end of June 1855, Whitman surprised his brothers with the already-printed first edition of Leaves of Grass. George "didn't think it worth reading". Whitman paid for the publication of the first edition of Leaves of Grass himself and had it printed at a local print shop during their breaks from commercial jobs. A total of 795 copies were printed. No name is given as author; instead, facing the title page was an engraved portrait done by Samuel Hollyer, but 500 lines into the body of the text he calls himself "Walt Whitman, an American, one of the roughs, a kosmos, disorderly, fleshly, and sensual, no sentimentalist, no stander above men or women or apart from them, no more modest than immodest". The inaugural volume of poetry was preceded by a prose preface of 827 lines. The succeeding untitled twelve poems totaled 2315 lines--1336 lines belonging to the first untitled poem, later called "Song of Myself". The book received its strongest praise from Ralph Waldo Emerson, who wrote a flattering five-page letter to Whitman and spoke highly of the book to friends. The first edition of Leaves of Grass was widely distributed and stirred up significant interest, in part due to Emerson's approval, but was occasionally criticized for the seemingly "obscene" nature of the poetry. Geologist John Peter Lesley wrote to Emerson, calling the book "trashy, profane & obscene" and the author "a pretentious ass". On July 11, 1855, a few days after Leaves of Grass was published, Whitman's father died at the age of 65. In the months following the first edition of Leaves of Grass, critical responses began focusing more on the potentially offensive sexual themes. Though the second edition was already printed and bound, the publisher almost did not release it. In the end, the edition went to retail, with 20 additional poems, in August 1856. Leaves of Grass was revised and re-released in 1860 again in 1867, and several more times throughout the remainder of Whitman's life. Several well-known writers admired the work enough to visit Whitman, including Amos Bronson Alcott and Henry David Thoreau. During the first publications of Leaves of Grass, Whitman had financial difficulties and was forced to work as a journalist again, specifically with Brooklyn's Daily Times starting in May 1857. As an editor, he oversaw the paper's contents, contributed book reviews, and wrote editorials. He left the job in 1859, though it is unclear whether he was fired or chose to leave. Whitman, who typically kept detailed notebooks and journals, left very little information about himself in the late 1850s.
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Is leaves of grass a poem?

Answer:
Leaves of Grass, a collection of poetry which he would continue editing and revising until his death.

Answer the question at the end by quoting:

Ronson was born at the Wellington Hospital, St John's Wood, London, to Jewish parents, Laurence Ronson, a real-estate speculator and music manager, and Ann Dexter. His ancestors emigrated from Austria, Russia, and Lithuania. Ronson was brought up in Masorti Judaism and had a Bar Mitzvah ceremony. The Ronson family had been one of Britain's wealthiest families in the 1980s; however, "the Ronson family lost $1 billion of its own money in the property crash of the early 1990's."
Mark made the leap from DJ to producer after Nikka Costa's manager heard one of his sets and introduced the musicians. Ronson produced Costa's song "Everybody Got Their Something," and Ronson soon signed a record contract with Elektra Records. He had already produced tracks for Hilfiger ads and, in 2001, used the connection to have Costa's single "Like a Feather" used in an advertisement. Ronson's debut album, Here Comes the Fuzz, was released in 2003. Despite poor initial sales it was well received by critics. As well as writing the songs on the album, Ronson created the beats, played guitar, keyboards, and bass. The album featured performances from artists from diverse genres, including Mos Def, Jack White, Sean Paul, Nikka Costa, Nappy Roots and Rivers Cuomo. The best known song from the album, "Ooh Wee," samples "Sunny" by Boney M and features Nate Dogg, Ghostface Killah, Trife Da God, and Saigon. It was featured that year in the movie Honey and its soundtrack. The song was later used in the movies Hitch and Harold & Kumar Escape from Guantanamo Bay. Two weeks after releasing Here Comes the Fuzz, Elektra Records dropped him. Ronson has since produced multiple songs on the albums of singers Lamya, Macy Gray, Christina Aguilera, Amy Winehouse, Lily Allen, and Robbie Williams. In 2004, Ronson formed his own record label, Allido Records, a subsidiary of Sony BMG's J Records, along with his longtime manager Rich Kleiman. The first artist he signed to Allido was rapper Saigon, who later left to sign with Just Blaze's Fort Knox Entertainment. He has signed Rhymefest, most well known for winning the Grammy for co-writing Kanye West's "Jesus Walks."

Did he produce anyone else?
He had already produced tracks for Hilfiger ads and, in 2001,