Singer Katy Perry. (Reuters)

Katy Perry is keen to branch out into acting and would like a supporting role in a comedy.

The 33-year-old singer - who is dating Orlando Bloom and was previously married to Russell Brand - has enjoyed a successful pop career over the last decade but she's now ready to branch out and do something else.

Speaking to Nova DJ Kent 'Smallzy' Small, she said: "It's time for me to live my life on my own schedule and terms, so that may look like doing some kind of other class, or like maybe I'd like to make a film in the future finally, doing a kind of separate thing."

The 'Bon Appetit' singer is particularly keen to work on something light hearted and could see herself in a best friend role.

She added: "I would do a comedy.

"But it has to be in the vein of a Kristen Wiig or a Jenny Slate, super dry, a little bit of a dark comedy, like a 'Bridesmaids' girl, like number four."

Meanwhile, Katy recently admitted she has suffered with "situational depression" and reached a low last year when her album 'Witness' didn't receive as positive a reception as she'd expected.

She said: "I had bouts of situational depression. My heart was broken last year because, unknowingly, I put so much validity in the reaction of the public, and the public didn't react in the way I had expected to. Which broke my heart."

But the singer decided to go to the Hoffman Institute in California to give her "a new foundation."

She added: "For years, my friends would go and come back completely rejuvenated, and I wanted to go, too. I was ready to let go of anything that was holding me back from being my ultimate self. 

"Music is my first love and I think it was the universe saying, 'OK, you speak all of this language about self-love and authenticity, but we are going to put you through another test and take away any kind of validating 'blankie.' Then we'll see how much you do truly love yourself.' That brokenness, plus me opening up to a greater, higher power and reconnecting with divinity, gave me a wholeness I never had.

"I recommend it to everyone, my good friends and other artists who are looking for a breakthrough. There are a lot of people who are self-medicating through validation in audiences, through substances, through continually running away from their realities - denial, withdrawal. I did that for a long, long time too ... The biggest lie that we've ever been sold is that we as artists have to stay in pain to create."