Hagar Schon Aaronson Shrieve (also known as HSAS) was a rock supergroup band featuring lead vocalist Sammy Hagar, lead guitarist Neal Schon, bassist Kenny Aaronson and drummer Michael Shrieve. The group reportedly rehearsed for less than a month before playing in concert. They released a semi-live album, recorded during two live performances at The Warfield in San Francisco, entitled Through the Fire. The album includes a cover of Procol Harum's "A Whiter Shade of Pale".

Source: Wikipedia (https://en.wikipedia.org/wiki/Hagar_Schon_Aaronson_Shrieve)