lyrics – n. the words that make up a song
debut – n. the first appearance of a product, sport, event, etc.
duo – n. two people who perform together, are usually seen together, or are associated with each other
harmony – n. the combination of different musical notes played or sung at the same time to produce a pleasing sound
single – n. one song from a recording that includes many songs
up-tempo – adj. played very fast; having a fast tempo