Surprise: Paul McCartney takes stage to celebrate stepson's college graduation

• Father allegedly confesses to killing family in chilling Facebook post
• George Zimmerman injured in shooting incident
• Large snake washes ashore on Florida beach
• Nothing is sweeter than this precious newborn's first day home — until you see the dog when she cries
• Woman fired for celebrating murders of 2 Mississippi officers

Former Beatle, Sir Paul McCartney danced and sang his way through the night during his stepson's private graduation party last Saturday.

A video was posted to YouTube of McCartney joining the party band, Phase5.

The Orlando Sentinel reported that the singer's wife booked the band and only later let on who she was married to.

Nancy Shevell booked the concert at Interlachen Country Club for her son Arlen, the Sentinel reported.