When Ke$ha first arrived on the scene with 'Tik Tok' in 2010, it didn't take her long to spread her partying message across the globe.
After 2.5 million sales of her debut LP Animal and six worldwide hits, she returns this week with her second studio set Warrior.
Digital Spy met up with the star to find out more about the record, what it was like working with Iggy Pop and whether she ever feels like taking it easy.
Hi Ke$ha, welcome back to London. Do you know what day it is?
"Hello! I'm not actually sure. I know it's 2012 though, because the world is supposed to end soon."
Do you enjoy visiting London?
"I come to London a lot - I actually made some of the first record out here. I love it here - I love the weather, the men and the unpredictability. I even made a track with Calvin Harris that has never seen the light of day."
"Yeah, it's a great track - I'm sure we'll release it one day!"
Your new album Warrior is out this week and it's very good. Does knowing you have a great record under your belt take the pressure off?
"I never fully feel like the pressure's off. I always feel like I need to come over here and promote as much as I can. No matter how successful you get, there's always another level you can take it to. It's part of the ambitious warrior inside of me."
The album feels...
"Which are your favourite tracks on it, out of curiosity?"
'Warrior', 'All That Matters', 'C'mon' and 'Wonderland'.
"I'm glad you like 'Wonderland' - I think it will catch people off-guard as it's not like anything else on the record. It's the one Patrick from The Black Keys is playing on. I'm so glad he agreed to do it! It's super genuine."
It feels like there are a lot of singles on the album.
"Thank you! I feel like I could make a music video for every single song on the album, which is good for me as I am very visual when I'm writing a song. I just hope the label goes with 'Warrior' at some point. It's an important song for me as it's inspired by my fans. It sums up my personal beliefs in a three-minute spurt. It's empowering."
It's also a good one to listen to in the gym.
"[Laughs] I'm glad about that! On this whole album I just really wanted to inspire people to kick some ass."
It feels like you spent a long time making the album. How many songs did you record for it?
"About 50. After that you have to sit down and narrow it down, which was such a hard process. There are still some songs not on the record that I love. Hopefully they'll see the light of day eventually. There's about five songs where I was literally crying about not being able to include them. Maybe I'll do one of those super magical deluxe editions!"
Iggy Pop features on the album. Is he as nuts as he is on stage?
"He is nuts, but at the same time he's so smart and grounded. He's very humble. He's so f**king awesome. To collaborate with someone you need mutual respect, and I was honoured to have that with him."
There was a time when it looked like this record was going to have a very "rock" sound to it. Were you always keen to ensure it kept a poppier edge?
"I love pop music and will do until the day I die. Some people think it's a dirty word, but I f**king love it. I wanted to bring in more of the music I listen to off stage, which meant more guitars and less auto-tune. Although I make electronic dance music, you can't just keep making the same thing over and over again. I want to push the boundaries of pop music."
There are still a lot of "party songs" on there though.
"Of course! I still want people to get as f**ked up and happy as they want to be, which may mean not getting f**ked up at all. There are people who travel with me on tour who don't drink alcohol, but they still party until the sun comes up. It's all about having the best night of your life, whatever that entails."
Everyone seemed a bit unprepared for the success of Animal. Were you?
"I don't think anyone can prepare from being unknown to suddenly being chased around by the press all day. I'm still getting used to it! Obviously I wanted the album to be successful, but I took a while for the magnitude to sink in. There was a point where everything I said/did/wore was under scrutiny, so I regressed back into my old ways of not giving a f**k."
Let's go back to this Calvin Harris collaboration. Were there any duets you wanted to do for the album that didn't happen?
"At some point I'd love to just see or touch one of the Rolling Stones. I haven't written songs for anyone else at the moment as I've been so focused on the record. I also have a picture book coming out which I'm really proud of, a 5-song 'Deconstructed' EP of acoustic tracks, a fake fur line and a jewellery line, which includes a teeth range. Basically I'm doing a bunch of incredibly fun s**t."
Ke$ha's new album Warrior is out now. Watch the 'Die Young' music video below: