Talk about a killer combination! �YouTube star David Choi and everyone's favorite Hallyu entertainer/boy-next-door Lee Seung Gi in one ad! That's right - David Choi's song, "By My Side", was used in a 30-second ad for a Samsung Zipel refrigerator. David Choi confirmed it on his Twitter, saying, "I would have never guessed that I would have a song in a Samsung refrigerator commercial in Korea (??) lol -". Enjoy the video below!