BoA recently showed her thanks for Lee Sora's remake performance of her song, 'No.1'. On May 9th, she tweeted, "Lee Sora senior's 'No.1' was breathtaking. Thank you for reinterpreting it in such a cool way. Today is a day in which I've been motivated [to do better] since the morning!" On an episode of MBC's "I'm A Singer" that aired on the 8th, Lee Sora chose BoA's 'No.1' as the song that she wanted to perform. Lee Sora captivated the audience with the rock version of the song, singing with a powerful yet mysterious feel, and BoA was also touched by the special remake performance of her song. The singer received 2nd place with her performance, achieving her highest place ever while appearing on "I'm A Singer". Source: BNT News via Nate