David Foster is a megaproducer, songwriter, and all around music executive. He’s produced music for talent such as Christina Aguilera, Andrea Bocelli, Celine Dion, and Michael Buble just to name a few.

So when he decided to host a one-night-only spectacular concert, he brought out all the big names he knew. He’s won 16 Grammy Awards and the special guests haven’t done too shabby for themselves either.

Although he’s now married with kids, one of the guests was Michael Buble who was all decked out in black tie apparel. The concert was designed to highlight some of David’s best tracks from his list of hits.

Some of the big names that appeared that night were Andrea Bocelli, Josh Groban, Celine Dion, and Kenny G. The show was held at Mandalay Bay in Las Vegas.

When it was Michael Buble’s turn to take the stage, he planned on singing his original song, “Home.” Michael and David bantered back and forth on stage, then Michael asked, “Is he around?” The crowd was confused.

When David said yes, the crowd started looking around and country superstar Blake Shelton emerged from behind the curtain. You wouldn’t expect for them to perform together, but that’s just what they did.

Michael’s jazzy sound and Blake’s country twang, although distinct and very different, blended together perfectly, as they jokingly flirted back and forth while singing the hit song.

Check out the stunning video of their performance below and be sure to share it with your family and friends.