"Smilin' Through" is a popular song written by Rudy Vallee and Charles K. Harris in 1919. The song expresses themes of love, hope, and resilience, emphasizing the importance of maintaining a positive outlook even in difficult times. Its catchy melody and heartfelt lyrics have made it a favorite in various musical adaptations. The song has been featured in several films and stage productions, including a notable 1932 movie starring Jeanette MacDonald and Maurice Chevalier. Over the years, "Smilin' Through" has been covered by numerous artists, solidifying its place in American music history as a timeless classic.