The hitmaker described the singer and her X Factor co-star Demi Lovato as being down to earth when he worked with them previously.
"They were both very easy to work with," Beanz told Digital Spy.
"A lot of people would say Demi is more known as a vocalist and Britney's an entertainer, but what's most important regardless is being attentive in the studio and open to who you're working with without having an ego.
"Both of them were very down to earth. I worked with Britney on Blackout and Circus and she was very easy to work with. That's why the songs came out so amazing."
Asked if he thought Spears could top her critically-lauded Blackout album, he added: "They say that the negativity helps to sell an album sometimes, but in that case it was also about the music.
"It was unfortunate what was going on, but since then she's got a lot better. I really think that nowadays it comes down to just having good music. Songs that make people feel good in the clubs."
Meanwhile, Spears has worked on a brand new track with will.i.am for his forthcoming solo project #willpower.
> Read Digital Spy's full interview with Jim Beanz here
Watch the music video for Britney Spears's 'Gimme More' below: