A melody is a sequence of musical notes that are perceived as a single entity. It is often the most recognizable part of a song, providing a tune that listeners can hum or sing along to. Melodies can vary in complexity, ranging from simple, catchy phrases to intricate, elaborate lines that evoke a wide range of emotions. In music theory, melodies are typically constructed using a combination of pitch, rhythm, and dynamics. They can be found in various genres, from classical compositions by Ludwig van Beethoven to contemporary pop songs by Taylor Swift. A well-crafted melody can leave a lasting impression and is essential for creating memorable music.