"Love Song" is a collaboration between JOY, a member of the South Korean girl group Red Velvet, and Wonstein, a South Korean rapper. The song is a sweet and catchy love song with a playful melody. The lyrics describe the feelings of wanting to wake the person up who is sleeping with a beautiful melody, expressing a desire to know them better. The lyrics also mention that even though the person may just hum along without any accompaniment, their voice is like a lovely acapella song. The song expresses the love and desire to be loved in return by the person. The chorus repeats the phrase "Love you like a love song" and emphasizes the desire to sing a sweet love song together with the person, merging their voices and creating a beautiful harmony. The lyrics also mention moments of sharing meals, watching movies together, and how the song encapsulates all these experiences, becoming a special thing between the two individuals. The lyrics convey the message of cherishing and expressing love for each other every day. Overall, "Love Song" is a joyful and romantic track that captures the feelings of falling in love and wanting to share sweet moments together through the power of music.