will.i.am has praised Britney Spears for her "dedication and love for music".
The 'Bang Bang' star served as executive producer on Spears's eighth studio album Britney Jean, which will be released in the US and UK next week.
Speaking to Popjustice, will.i.am revealed that he found Spears to be "dedicated and disciplined" in the recording studio.
He said: "I don't want to name artists but Britney is the most focused and disciplined of all the artists in the industry. Britney's a pro.
"Her time is valuable: she has kids. And a lot of the time with an artist they'll go into the studio, they'll sit around, they're watching TV, they order some food, they're giggling and joking, they're searching and listening to other people's songs, they finally get to work then they take a break, they order some food, their friends come… And that happens for four or five months, sometimes eight months.
"Britney's like: 'I'm coming in from 2pm until 6pm.' She'll arrive at 1.30, and from 2 to 6 she'll be like BAM BAM BAM BAM BAM BAM. BAM BAM BAM BAM. BAM BAM. I've never seen anything like that. Her work ethic is pretty admirable."
The Black Eyed Peas singer admitted that it is "hard" working as executive producer.
"Executive producer is a hard role. If it's a success, the executive producer does not get the credit," he said. "If it's a failure, 'IT'S THE EXECUTIVE PRODUCER'S FAULT!'
"You're either the last to be acknowledged or the first to be acknowledged. And I know that, because I've been on the other side, as an artist!
"But I like Britney. I just love her dedication and love for music. That's just the way it is. I love how sweet she is, and how genuine she is. Shy, but fierce. And I want to see her win."
Watch will.i.am and Britney Spears in the music video for 'Scream & Shout' below:
