In a song from Meredith Wilson's "The Music Man", this many trombones "led the big parade"
[DOC] [TLE] Meredith Willson's The Music Man - Topics [PAR] The Music Man is a musical with book, music, and lyrics by Meredith Willson , 
based ... City, Iowa, and many of the musical's characters are based on people 
that Willson ....