The well known tune they're playing is of course Scott Joplin's 1902 ragtime classic "The Entertainer".

Tags for this video have been changed from 'bottle, band' to 'bottle, band, scott joplin, ragttime' - edited by dystopianfuturetoday

Useless musical knowledge: The music is from Scott Joplin's Ragtime Opera, Treemonisha. It is the only opera in existence to be entirely comprised of ragtime music. Joplin died before it could be performed, but close personal friend Irving Berlin financed a production of it several years later.

Some history,- Sept. 14, 1896-the "Crash at Crush" immortalized by famed Texas ragtime composer Scott Joplin in his march, "Great Crush Collision," early in the 20th century.
This was a staged train collision that killed several spectators...they did not do another one...