Jimmy Webb

Singer-songwriter Jimmy Webb will perform "MacArthur Park" and more at the park on Saturday -- a first in what he calls the song's "wild and wacky" 45-year history. (Carolyn Cole / Los Angeles Times)

Before becoming a widely lauded songwriter, Jimmy Webb was just another aspiring musician living in a dingy Los Angeles apartment.

The Oklahoma transplant would wander from his low-rent flat in Silver Lake to a place that would inspire one of his most indelible hits, MacArthur Park. There, between Wilshire and 7th, he'd wait for his girlfriend to get off work from her job nearby.

"I used to eat lunch in the park," said Webb, 66. "It was a place you could be away from the dreariness of a really bottom-scale apartment."

The scenes he saw there day after day inspired him to write "MacArthur Park," the unlikely 1968 hit single sung by actor Richard Harris.

TIMELINE: Must-see summer music

Now, 45 years after the location he immortalized became an unlikely pop-culture touchstone, Webb will sing "MacArthur Park" in MacArthur Park on Saturday to kick off a summer concert series. It's a first for Webb, who's never performed the song at its namesake location.

"MacArthur Park was — perhaps I'm painting it with the brush of nostalgia — a kind and gentle place," Webb said.

The roster of artists who have recorded "MacArthur Park" is staggering, and Webb himself says he has no idea how many times it's been covered. Beyond Harris' signature version, it's also been recorded by Donna Summer, Frank Sinatra, Glen Campbell and Liberace.

Thanks to the song's curiously impressionistic lyrics — "MacArthur Park is melting in the dark / All the sweet green icing flowing down" — and that cake forever left in the rain, it's stood out among the usual Top 10 fare. The number has been satirized on "The Simpsons," played in the movie "Airplane II" and parodied by "Weird Al" Yankovic.

"I'd be disingenuous if I said I'm unaware it has detractors," said Webb, who now lives on New York's Long Island. "It was something I had a sense of humor about. To me, that's part of it: the grandiosity of it, the absolute presumption of the whole thing is part of it. It's part of what we associate with the '60s: Let's push it, let's see how far we can inflate this condom before it blows up."

PHOTOS: Concerts by The Times

Jason Hanley, education director for the Rock and Roll Hall of Fame and Museum in Cleveland, says the unorthodox "MacArthur Park" is partly a product of its time.

"In the late '60s, particularly in California, you've got all this experimentation going on," said Hanley. "He was taking elements of the Great American Songbook — the Cole Porter and George Gershwins of the 1930s and '40s — with pop songs of the '50s and '60s and mixing that with these beautiful arrangements. Putting all that into one seven-minute song is kind of crazy."

"MacArthur Park" sprung from a request from producer Bones Howe to write a piece combining classical and rock elements for the group Howe was working with at the time, the Association, which scored '60s hits with "Cherish" and "Windy." Webb came back with "MacArthur Park," which at more than seven minutes was too much for the Association to add to an album that was nearly finished, so the group passed.

He stuck it back into his portfolio until he met with Harris, who wanted to follow his success in the musical "Camelot" by releasing a pop album.

TIMELINE: Coachella and Stagecoach

The song may not have reinvented Harris as a pop star, but it did end up breaking barriers on Top 40 radio.

Veteran L.A. DJ Charlie Tuna was part of the staff at the powerhouse 93 KHJ Boss Radio AM station, a national tastemaker in pop music for much of the '60s. He remembers "MacArthur Park" being broadcast in its entirety on then-emerging underground FM radio stations.

"We were paying attention to what they were playing," he said. "We didn't want to lose that hip crowd."

When KHJ program director Ron Jacobs called Webb and asked for an edited version that his station could play, he declined.