Nobody Saw This Coming: John Foster Drops Surprise Duet with George Strait — And It Might Change Country Music Forever. In a move that shocked fans, American Idol star John Foster teamed up with country legend George Strait for a surprise duet. No promo. No hints. Just two powerful voices blending into pure magic. The internet lit up, calling it the “performance of the year.” But the biggest moment? George turned to John and said, “You’re a…