After 20 years, Arizona band The Format has come back for a reunion tour, performing on "The Tonight Show Starring Jimmy Fallon" on Monday, Oct. 6. Taylor Swift will also be on The Tonight Show on Oct ...

Before singing in Fun., lending his voice to duetting with P!nk, and becoming a podcast personality, Nate Ruess sang in an Arizona-based indie band called the Format, and people who loved that band ...

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The Format will appear alongside Taylor Swift and Keri Russell on "The Tonight Show Starring Jimmy Fallon" on Monday, Oct. 6. Swift will be there to discuss her new album, "The Life of a Showgirl" in ...