Brand inspired Perry’s second album

London: Katy Perry has revealed that her fiance Russell Brand is the inspiration behind her second album, ‘Teenage Dream’.

The pop star began dating last year (09) – halfway through recording the project.

"There are some songs on the album inspired by love. There`s a song called Hummingbird Heartbeat. He (Brand) gives me that Hummingbird Heartbeat," the Daily Star quoted Perry as telling the BBC.

She disclosed that the lyrics of another track, called ‘Firework,’ were written after the ‘Get Him To The Greek’ star read her a passage in Jack Kerouac`s novel ‘On The Road.’

She recalls, "It was a paragraph that he said I was like. In the book he was talking about how he wanted to be around people who were buzzing, fizzing and making people go `Argh, like fireworks across the sky.` I guess that`s my whole vibe. I want to make people go `Argh` in so many different ways. I want to be a living firework.

The 25-year-old singer added: "Sometimes you`re in a situation where it feels like this is the best you can get. I really do believe in true love and you should really find it."