Melody/ˈmelədi/ Definition 1 of 3Pro Tip 1/3Musical Emotion Melodies often convey emotion, setting the mood for a song or piece. The melody in the opening scene captured the film's sadness. Pro Tip 2/3Catchiness Factor A 'catchy' melody is easy to remember and makes you want to sing along. She couldn't stop whistling the catchy melody all day. Pro Tip 3/3Musical Identity The melody can be what distinguishes one song from another. Despite similar lyrics, the melodies gave each song a unique identity.