VIDEO: Katy Perry Performs 'Roar' & 'Walking on Air' on SNL

Katy Perry was the featured musical guest on last night's SATURDAY NIGHT LIVE, with Bruce Willis taking over host duties - below, check out her performances of 'Walkking on Air' and 'Roar' from the broadcast!

In 2007, Perry signed a recording contract with Capitol Records and adopted her current stage name. The following year, she came to prominence with her second studio album and first mainstream release, One of the Boys (2008), which produced singles "I Kissed a Girl", "Hot n Cold", "Thinking of You", and "Waking Up in Vegas". The project was further promoted through the Hello Katy Tour. Perry's third record, Teenage Dream (2010), spawned the Billboard Hot 100 chart-topping singles "California Gurls", "Teenage Dream", "Firework", "E.T.", and "Last Friday Night (T.G.I.F.)". In doing so, it became the first album recorded by a female artist in history to produce five number-one hits, and the second album overall behind Michael Jackson's Bad (1987). Her fourth album, Prism, which contains the Billboard Hot 100 number 1 single "Roar", is scheduled for an October release