What were the major developments and advancements in recording technologies during the postwar era?

Here are the major developments and advancements in recording technologies during the postwar era:

-The recording tapes were improved made in the material vinyl. The sound became better and fragile.

-Transistor radios were developed. This allowed people to bring smaller sized radios everywhere.

-Development of new microphones

-The introduction of a solid-body guitar by Fender paired with amplifiers.