Scott Joplin's "The Entertainer" was published on December 29th of 1902 along with Elite Syncopations, A Breeze From Alabama and ,... Truth George Gershwin was born on September 26 1898. Question- How old was George Gershwin in late 1901-02 when the Entertainer was being composed???? Answer- 3 and a half yrs old. Let's look at this question again. When did Scott Joplin (Know as King of Ragtime Writers) Collaborate with George Gershwin (a 4 year old at the time) to do/compose?) the Entertainer?

ragtime piano

Scott Joplin comes to mind almost immediately.

Scott Joplin - syncopation master of ragtime

That would be Scott Joplin

--Maple Leaf Rag

-- The Entertainer