"Seventy-Six Trombones" is a popular song from the musical The Music Man, written by Meredith Willson. The song is performed by the character Harold Hill, who dreams of creating a marching band in the small town of River City, Iowa. The catchy tune celebrates the excitement and joy of music, particularly the sound of a large brass band. The song's title refers to the impressive number of trombones in the envisioned band, symbolizing unity and community spirit. It highlights the transformative power of music and the enthusiasm it can bring to a town, inspiring both children and adults alike.