Seth MacFarlane Performs Frank Sinatra at Milwaukee Piano Bar

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It seems the Family Guy intro came to life for bar patrons of Lucille’s Piano Bar in Milwaukee.

The FOX animated show's creator Seth MacFarlane showed up with a drink in one hand and a mic in another as he set out to perform a special rendition of Frank Sinatra's "Luck Be a Lady," among other songs, over the weekend.

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He was joined by his pal and former Gossip Girl star Jessica Szohr, and at one point in the video captured, he even does a little dance. "Thanks Seth MacFarlane for spending most of the night with us at Lucille's on Saturday night and singing a few songs!!" Lucille's Facebook page posted. "Pretty epic!"

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The 41-year-old entertainer isn't the only celebrity to be spotted sloppily singing. Sam Smith was caught on camera attempting to belt out Beyonce at a Nashville karaoke bar, and the video is too good to miss.