Sony Masterworks' "Milestones in Columbia's History" web site
( says it was
Mendelssohn's Violin Concerto, with Nathan Milstein, the New York
Philharmonic Orchestra and Bruno Walter (available on CD: SMK 64459).

However, that initial release included several titles, so it seems somewhat
arbitrary to call any one of them the "first." The Milstein/NYP may have
had the first catalog number, but arguably, all of the titles in that group
ought to share the distinction.

John Ross
Northwest Folklife

At  6/10/2005 11:18 AM, Nicole Blain wrote:

>On June 21st, 1948, Columbia Records launched the first long play
>record.  Would anyone know who and what were on the very first LP?
>I've found one source that indicates it may have been Mendelssohn's violin