Britney Spears upcoming Album 'Femme Fatale': Britney Spears must be feeling pretty confident about her upcoming album, 'Femme Fatale.' Days after unveiling her new music video for song, 'Hold It Against Me,' Spears released a preview of another single from her album, 'Inside Out.' And on Tuesday, she released a sneak peek of a third single, 'I Wanna Go' on Twitter.

Dr. Luke, who worked on Spears' upcoming album, 'Femme Fatale,' was the first to tweet the teaser. Spears re-tweeted the link with the note, "I-I-I Wanna Go-o-o by the amazing #MaxMartin –Britney" Listen to the 'I Wanna Go' snippet after the jump! The singer's longtime manager, Larry Rudolph, spoke with MTV about Spears' new album, and revealed the team is in fact hoping to release a second single before the album comes out next month.

"We have a second song that I think we're gonna end up putting out before the album drops," he said. "I can't say with 100 percent certainty, but I think we probably will."He continued, calling the next single a "monster." It's unclear whether the second single he's referring to is 'Inside Out' or the recently teased 'I Wanna Go.'

"I don't think I've been this excited about releasing a Britney single in many, many years," he said. "It's that good. That's all I'm gonna say about it at the moment. I haven't heard a final mix of it, but I should get it in the next day or two. So far, what I've heard is just extraordinary. It really is amazing. Her fans will be very happy with it. I'm trying hard to get it out before the album comes out."