It's been almost a year since SNSD's Taeyeon participated in her debut musical, "The Sun's Song". Recently, the production unveiled studio-quality tracks of Taeyeon's solo songs, and fans have been gushing over her clear, angelic vocals. To recap, Taeyeon played the role of 'Kaoru', a girl diagnosed with XP (xeroderma pigmentosum) - a disorder which forbids one from being exposed to sunlight. Kaoru doesn't feel the limits of her disorder until she falls in love with a surfer boy, who's ironically in love with the sun. "The Sun's Song" was actually based on a Japanese novel, and it also received a Japanese film adaptation called "Midnight Sun". Enjoy the gorgeous studio versions of Taeyeon's songs below! -- "Goodbye Days" - "Skyline" - "It's Happy Line" -- Thanks to exdee for the tip! == [UPDATE] We've received word that the tracks may not be official, and instead, could have been remastered by a fan.