I mentioned the two 1940's recording bans on recording in a different thread, and I was wondering what you think the effect on music, mainly Jazz music, was. There were two recording bans by the AFM, the first began in August of 1942 and lasted for almost two years until early 1944. The second ban was in 1948 and lasted about a year. The reason for the recording bans was that the AFM president James Petrillo felt that records were hurting the livelihood of musicians who made their living mostly from live appearances. All studio musicians and Jazz musicians belonged to the AFM, so during that time no records were made (I'm not sure if Blues or Folk records were made during that time). The effect of the first ban from this viewpoint (in 2005) is that the transition from Swing music to Bebop is not well documented on recordings. But also some major artists had their careers put on hold until the ban ended including Sinatra, Nat King Cole, etc. There were also other artists who had the careers cut short, and yet others who couldn't begin their careers until the ban ended like Charlie Parker for instance. While there was no studio recordings made during the second ban, magnetic tape had already been invented, so that is why there are so many live recordings from the late 40's (almost all initially early bootlegs).