From February to August 2010, Taeyeon became a presenter for the KBS 2TV show, "Win Win", alongside Wooyoung of 2PM, Choi Hwa-jung, Kim Shin-soung and Kim Seung-woo. On May 7 of the same year, she had her musical debut as interpreting the main role in "Midnight Sun", which is based on the Japanese novel "Taiyō no uta" by Aya Denkawa. The musical was about Kaoru Amane, a 17-year-old girl who she suffers from xeroderma pigmentosa, which forbids her from going out during the day. She maintains her hopes for writing songs and singing every night at a train station; Taeyeon received good reviews for her performance. She also learned to play the guitar for her performance. Reflecting on her experience, Taeyeon stated that the musical was difficult for her, citing that her weak concentration made her act and sing at the same time. It was difficult for her. Taeyeon released a song, "Like A Star", accompanied by his former trainer The One, as well as a solo song, "I Love You," for the SBS drama, "Athena: Goddess of War". The previous song reached number one on Gaon's digital list. The previous song reached number one on the digital list of Gaon42 and the last reached the second place.