"Yesterday" is a popular song by The Beatles, written by Paul McCartney and released in 1965. The song reflects feelings of nostalgia and loss, as the narrator reminisces about a time when life was better. Its simple melody and heartfelt lyrics have made it one of the most covered songs in music history. The song's themes resonate with many listeners, capturing the universal experience of longing for the past. "Yesterday" is often praised for its emotional depth and has been featured in various films and television shows, further solidifying its place in popular culture.