Katy Perry gets sweet in ‘Birthday’ lyric video

Katy Perry’s 10 best songs from ‘Hot n Cold’ to ‘Roar’

Is ‘Roar’ Katy Perry’s first single from ‘Prism?’

Watch: Katy Perry assaults Prince Charming in ‘Wide Awake’ video

Watch: Katy Perry joins the Marines in ‘Part of Me’ music video

Listen: Katy Perry is ‘Wide Awake’ on sad new song

Katy Perry brings all of her to 3D movie project, ‘Part of Me’

Listen: Katy Perry previews ‘Part’ of new single from ‘Dream’ reissue

Listen: Katy Perry’s sad, acoustic version of ‘The One That Got Away’

Listen: Katy Perry sings about a man ‘that breaks me’ on ‘Bullet’

Who knocks Rihanna’s ‘We Found Love’ out of No. 1 on the Billboard Hot 100?

Listen: Katy Perry and B.o.B on ‘The One That Got Away’ remix

Katy Perry’s march to No. 1 continues with B.o.B. remix of ‘The One That Got Away’

Rihanna stays at No. 1 on Billboard Hot 100, Katy Perry advances

Katy Perry sets debut for ‘The One That Got Away’ video

Can Katy Perry go all the way with sixth tune from ‘Teenage Dream?’

Katy Perry ties Michael Jackson’s record for No. 1s on Billboard Hot 100

Katy Perry nerds out on cover of new single, ‘Last Friday Night (T.G.I.F)’