The song "Sepi Gelisah" by Ungu reflects on the feeling of loneliness and longing for love. The lyrics describe the full moon as a symbol that shines upon the singer's heart, just like a burning candle illuminates their life. The singer's eyes are focused on someone, suggesting a romantic interest. The first part of the song talks about the singer's restlessness and longing for the sun to brighten the emptiness in their heart. The joy that comes from the beautiful love in their life accompanies them in every step they take. The repetition of the second part emphasizes the feelings of loneliness and the longing for the sun to bring happiness and fulfillment to their empty heart. The singer cherishes the presence of their beloved, who has been a constant companion throughout their life. Overall, the song conveys the emotions of longing, loneliness, and the desire for love, depicting the importance of having someone who brings joy and light into one's life.