Self-described as "just this guy from Topeka, Kansas who kind of blew up on the Internet about a week before Christmas", McKee became one of Candyrat Records' best-selling artists after their video of "Drifting" was promoted by users at Digg. For a time, three of McKee's videos were concurrently the three most watched on YouTube. In the wake of this exposure, he appeared by invitation on Woodsongs as well as Last Call with Carson Daly, and his online store sold out of his various guitar tablature books. Due to the increased demand, he began to offer sheet music for nearly all of his songs on his official website. He also contributed to Josh Groban's 2007 Grammy-nominated Christmas album, Noël, playing guitar on the song "Little Drummer Boy". Groban's album went on to become the best-selling CD of 2007 in the U.S., hitting #1 on the U.S. Billboard 200.
In 2010 McKee contributed to Lee Ritenour's CD 6 String Theory that also features guitarists like Steve Lukather, Slash, Neal Schon, Tal Wilkenfeld, and Mike Stern.
In 2012 McKee played alongside Prince on his Welcome 2 Australia tour. He played with Prince's band during the concert on Purple Rain, Sometimes It Snows in April, Mountains, Dance Electric, and Love, Thy Will Be Done. He also kicked off the Melbourne concert with Ebon Coast, Drifting, and The Friend I Never met.