McCartney is currently on tour, and has dates with the Jonas Brothers scheduled through December

McCartney joined Nick, 33, Joe, 36, and Kevin Jonas, 37, during opening night on their current tour for a surprise appearance ...
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Jesse McCartney Details "Very Emotional" Jonas Brothers Reunion

After all, the "Beautiful Soul" singer couldn't help but praise Nick Jonas, Joe Jonas and Kevin Jonas after being invited to sing the track on the first night of the Jonas20: Greetings From Your ...
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Jonas Brothers reunite with Disney pals Demi Lovato, Jesse McCartney for anniversary tour

It's a "Camp Rock" reunion for Demi Lovato and The Jonas Brothers. The "Heart Attack" singer joined the trio on stage at the opening concert for the Jonas20 anniversary tour, at New Jersey's MetLife ...
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Jesse McCartney Teases New 'Very Exciting' Weightless Tour as He Reflects on Recent Show with Jonas Brothers (Exclusive)

Jesse McCartney is leavin’ — for tour! The singer is hitting the road on his new Weightless Tour starting Tuesday, Sept. 30 — and tells PEOPLE that fans are in for an exciting setlist that features ...