Quiet Sun is an English progressive rock/jazz fusion band that emerged in the mid-1970s, leaving an indelible mark on the fusion genre with their innovative sound. Their 1975 album, "Mainstream," is a testament to their musical prowess, blending intricate compositions with improvisational brilliance. The band's work is celebrated for its complex arrangements and the seamless fusion of rock and jazz elements, creating a unique auditory experience. Quiet Sun's legacy continues to inspire musicians and captivate audiences, making them a notable name in the progressive rock and jazz fusion landscape.