May 8th is a day of celebration for the SM58 Dynamic Vocal Microphone. The SM line, which originally was short for Studio Microphone, was first developed in the 1960s, and were aimed at the TV studio market, with a non-reflective finish and no on/off switch. Rock and roll sound engineers discovered the SM58 and SM57 in the late 1960s, and made these models famous worldwide as onstage performance microphones. From the rigors of touring to attempting various ways of destroying them, the SM58 can take a beating, and it’s no wonder why musicians trust this legendary microphone.