"hit song writing business," 1908, from tin pan, slang for "a decrepit piano" (1882). The original one was 28th Street in New York City, home to many music publishing houses.
A reference to the popular music industry in the United States; the term is not used as much today as it was a generation or two ago.
Note: Tin Pan Alley is often associated with songwriters who are more interested in making money off their songs than in producing high-quality music.
The site where popular music was composed, arranged, published, recorded, etc, designating the neighborhood on Seventh Avenue between 48th and 52d Streets in New York City; also, the realm of popular music composition, publishing, etc
[1908+; fr the late 1800s musicians' term tin pan, ''cheap, tinny piano'']