The term "Big Five" was coined around the time when long-playing recordings became available, regular orchestral radio broadcasts were expanding, and the five orchestras that make up the group had annual concert series in New York City.
By the mid-20th century, with recordings and radio broadcasts dominated by East Coast ensembles, the most prominent orchestras were known as the "Big Three": New York, Boston, and Philadelphia.
[13][14] In the 21st century, some observers of American orchestras suggest that the "Big Five" designation is no longer meaningful.
The New York Times suggested that "climate and cost of living are as likely to figure in a musician's choice of employer as an orchestra's historic renown.
"[5] Additionally, the availability of a large number of talented young musicians is described as a "leveling factor" that enhances the quality of all American orchestras.