American lyricist Gus Kahn (1886-1941) was a prolific songwriter of the early 20th century, contributing lyrics to countless popular songs and jazz standards like "It Had to Be You" and "Dream a Little Dream of Me." His collaborations with various composers resulted in a vast catalog of hits that defined the Tin Pan Alley era. American songwriter Ernie Erdman (1879-1946) was a Tin Pan Alley era lyricist and composer, known for his contributions to popular songs and early jazz. He co-wrote the enduring classic "Toot, Toot, Tootsie (Goo' Bye!)" and collaborated with many prominent musicians of his time. American bandleader and composer Dan Russo (1885-1956) was a prominent figure in the 1920s jazz and dance band scene. Leading "Dan Russo and His Oriole Orchestra," he recorded numerous popular tunes and co-wrote the jazz standard "Toot, Toot, Tootsie (Goo' Bye!)."