Teary Pharrell happy at awards show
Pharrell Williams was teary-eyed after he performed a medley of his hits at a US music awards and earned the innovator gong for his contribution to music.
"I never dreamt in a million, million, million years as a producer that I would be standing here as an artist," the 41-year-old told the crowd at the iHeartRadio Music Awards, at the Shrine Auditorium in Los Angeles.
"All I did was write the songs and you guys did all the heavy lifting, all the hard work."
Pharrell performed his songs Happy and Come Get It Bae, as well as two of last year's biggest hits that he was a part of - Robin Thicke's Blurred Lines and Daft Punk's Get Lucky.
"I gotta thank my saviour, I gotta thank God ... my wife and my son, Rocket," said Pharrell, who rarely acknowledges his personal life.
Pharrell famously cried in an interview with Oprah Winfrey last month. She appeared in a video, which also included Beyonce and Lady Gaga, praising Pharrell's talent.
But Pharrell wasn't the only star in happy mood: Rihanna was the night's big winner, taking home four trophies including artist and song of the year for Stay.
"It's not easy what we do. It's very difficult at times. It's a lot of pressure to be a lot of things, and I've never felt comfortable being anything other than myself - and I just thank my fans for being supportive," Rihanna said.
The pop star also won best fan army and hip-hop/RnB song of the year for the anthemic Pour It Up.
Pitbull, who won best collaboration for the number one hit Timber with Kesha, performed that song and Wild Wild Love with girl group G.R.L. and female background dancers who wore white and gold.
Usher also enticed the crowd when he danced slickly to the new Michael Jackson single, Love Never Felt This Good, and 20-year-old Ariana Grande performed her new song Problem in a black mini dress and white knee-high boots.
The three-hour awards show paid tribute to music roots in Los Angeles with acts from Katy Perry to Steven Tyler to the Black Keys talking in videos about establishing their sound in the city. Compton-born Kendrick Lamar brought the theme to life with a performance of Tupac and mentor Dr Dre's California Love.
Some of the top nominees didn't attend the awards show, including Justin Timberlake, Jay Z and Macklemore And Ryan Lewis. Miley Cyrus, who is recovering from a severe allergic reaction to antibiotics, won best lyrics for her hit Wrecking Ball, and her dad picked up her award.
"As a dad, I can't begin to tell you how much your thoughts, your love, your support for my family and Miley mean to all of us," Billy Ray Cyrus said.
Lorde was also recovering from being sick, and she thanked fans in a video for her win for best new artist.
Performers during the fan-voted show, which aired live on NBC, included Shakira, Luke Bryan, 30 Seconds To Mars, Bastille and Blake Shelton, who won country song of the year. Diddy, Jennifer Lopez, Selena Gomez, Lionel Richie and Gwen Stefani made appearances.
Imagine Dragons' Demons and Avicii's Wake Me Up won the trophies for alternative rock and EDM song of the year, respectively.