Faith Hill surprised husband Tim McGraw by getting everyone at their Indianapolis Soul2Soul Tour stop to sing "Happy Birthday." Wait — is he blushing?

The newly 50-year-old McGraw was joined by two birthday-mates as Hill — who turns 50 herself in the fall — sang in front of several thousand fans. The moment happened on Saturday (April 29), two days before the singer's actual 50th birthday on Monday (May 1). If she's given him a private gift, neither has tweeted about it yet.

Through the Years, It's Tim McGraw and Faith Hill!

Both singers are among the next generation of stars proving 50 is the new 40. Keith Urban and his wife Nicole Kidman both turn 50 in 2017. Kenny Chesney turns 50 in 2018. Shania Twain and Martina McBride are two more who've hit the milestone recently, and this whole group seems to have sipped from the fountain of youth!

Saturday night's show at Bankers Life Field House is the last Soul2Soul Tour show until Thursday in New Jersey. The husband and wife team of superstars are on the road for a co-headlining tour for the third time, but the first time in a decade. This fall they'll also release their first collaborative album. "Speak to a Girl" is the official single from that album but they've let others slip during live shows. In Charleston, S.C., on April 20 they sang a song called "Break First."

See 7 Unforgettable Tim and Faith Moments