Nana Takahashi is an arranger, lyricist and vocalist that has released many songs as part of the doujin circle SOUND HOLIC. She has performed in songs of various different genres, most commonly eurobeat, pop and ballad. She initially debuted as a singer in SOUND HOLIC MEETS TOHO ~Oriental Phantom Ballet~, and later as a lyricist and vocalist in TOHO PROJECT SIDE STORY "Memories of the Stars" Soundtrack. In SOUND HOLIC's Full Vocal albums she usually performs eurobeat and ballad tracks. She has also made guest appearences in various CYTOKINE albums. She humorously used the pen name GSK48 in the song Fateful Encounter. Her songs Pri?re and Operation: Steamy Spa!? received their own promotional videos.