No one ever suggested that the Eagles invented country-rock music. The seeds for that hybrid had been planted and nurtured in the mid-1960s by the likes of the Byrds, Buffalo Springfield, the Flying Burrito Brothers, Linda Ronstadt and the Monkees'
What the Eagles did was take their distinctive version of this Los Angeles-bred genre to international acclaim thanks to a combination of relentlessly catchy songs, an astute business plan and fortuitous timing.
Much of the credit for the band's recipe for success has been attributed to Frey, the singer and guitarist who died Monday at 67 from a combination of rheumatoid arthritis, acute ulcerative colitis and pneumonia.
"We originally hired Glenn to replace Bernie Leadon, because he left my band to be in the Flying Burrito Brothers," Ronstadt told The Times on Monday, remembering what prompted her to draft Frey to be part of her backing band in the early 1970s.
At the time, Frey was just one of hundreds of aspiring musicians hanging around Hollywood searching for an outlet for his music. He'd come to L.A. from Detroit, and one of his early connections was with singer and songwriter J.D. Souther, another Detroit native who'd grown up in Amarillo, Texas, before venturing west. They formed a band called Longbranch Pennywhistle, which played McCabe's Guitar Shop in Santa Monica and the Troubadour in West Hollywood, among other local clubs that constituted a cauldron for the brewing L.A. music scene.
Ronstadt and Souther had dated, so she encountered Frey when he was still in Longbranch Pennywhistle. Ronstadt's manager, John Boylan, invited Henley to join Ronstadt's band after he'd relocated from Texas.
"They were all great musicians," Ronstadt said, "but what I was most interested in creating was a harmony band, and they were a great harmony band."
What struck Boylan first about Frey, he recalled, was his "boundless energy for what he was doing. ... He was just a whirlwind. You could tell he had his heart set on what he was doing, and whatever it took, he was going do it.
"The other thing that impressed me was the scope of his musical knowledge," Boylan said. "He knew tons of different musical genres. He was a way better musician than a lot of people have given him credit for."
"Glenn was always smarter, and better prepared, than you thought he would be," she said. "It was like going into a card game with him. We used to play poker, and you'd go into a game thinking you were going to take his money, but he always ended up winning.
"When we played a grad night gig at Disneyland in 1971, we had to do four shows a night," she recalled. "You'd play a 20-minute set, then be off for three or four hours, then play another 20 minutes — there was a lot of time to kill between sets.
"At one point we got into a poker game with Smokey Robinson, who also was booked there," she said. "I had a huge crush on Smokey at that time, and we were playing poker, and Glenn kept winning. I told him, 'Quit winning!' That's the kind of poker player I was."
His skills translated into the business world as well, said the Eagles' longtime manager, Irving Azoff, the superstar talent manager considered by many to be among the most powerful people in the entertainment industry.
"He was always telling people, 'When you're in the music business, you've got to have your music right, and you've got to have your business right,' " Azoff said on Monday. "Glenn taught me as much about business as he taught me about music. … He wasn't just an incredible writer, singer and musician, he also had incredibly good business instincts."
That played out in Frey becoming what he often described as the band's "quarterback," usually making decisions about what songs they should play, in what order, and what they would rehearse.
Sometimes that led to tension with the other band members. In an interview with The Times last year, Henley said he would have liked to have included more of the group's recent songs on its "History of the Eagles" tour in 2013 and 2014. "But that's not my decision," he said.
Azoff indicated that, with Frey, it wasn't so much a matter of exerting control but of having the acumen to keep the multiple plates spinning that are crucial to an organization as big as the Eagles.
"They had a really good creative give and take — it was not a dictatorship," Azoff said. "Don had his way of wanting to do certain things, and they worked all that out together."
Ronstadt said she knew from the start that the Eagles were destined for great things.
"The first time they started working out their harmonies, they needed a place to rehearse. J.D. and I had a house we were sharing, and we said, 'You can use our living room.' It was a small place, and there wasn't really room for six people, so J.D. and I went to the movies.
"When we came back, they had worked up 'Witchy Woman' in that room. They tuned their voices to each other in that room," she said. "It was the best I ever heard that song sung. It was just amazing — I knew then they were going to have hits. There was no doubt in my mind."