The unique CF for 'SK Telecom' has just been released, which features IU and the late Kim Kwang Seok, a legendary Korean folk-rock singer. Earlier, we revealed that IU had been selected to be a model for SK Telecom's mobile brand, 'T'. The CF boasted an advertisement that would perfectly fit with T's new campaign slogan, "Beyond reality". An official from SK Telecom explained, "To show our new phase change of the LTE (long-term evolution) era, we decided to plan a new campaign." The first advertisement from the 'Beyond reality' series sees IU singing a special duet with Kim Kwang Seok. The video was created by reconstructing a set for IU that was similar to Kim Kwang Seok's live stage, and sophisticated 3D technology combined the two scenes. Check out IU performing Kim Kwang Seok's "At About Age 30" with the star below! - < Behind the scenes > Source: ETO via Nate Tip: squishyblob