Lim Jeong-hyun (born July 5, 1984), also known by the online alias funtwo, is a South Korean guitarist known for his cover of the piece Canon Rock. The YouTube user with the alias "guitar90" is not Lim Jeong-hyun, but an unknown person who just happened to upload Lim's video. This has been cleared up in his latest interviews. Quoting from the video, the interview clarifies, "someone else called guitar90 who grabbed the video and put it on YouTube where it became a sensation".
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