The song "Bulong" by December Avenue is about the powerful feeling of being in love with someone. The lyrics describe the intense longing and fear of approaching someone that the narrator has feelings for. The opening line "Hindi masabi ang nararamdaman" suggests that the narrator is unable to express how they feel, and instead they feel nervous and tremble at the thought of getting close to the person they desire. In the chorus, the narrator declares their commitment to the object of their affections, stating that they will be faithful and loyal. The lines "Ikaw ang ilaw sa dilim at ang liwanag ng mga bituin" signify that the person they love brightens up their world and provides a guiding light, helping them navigate through the darkness of life.