There is more than one artist with this name:

1.) Punk-Rock trio from Nýřany, Czech republic.

2.) Hip-Hop/Rap duo from United Kingdom. The correct format is S.A.S; So please change your tags!

3.) Australian Heavy Metal band, which was active from 1984 to 1989. During their career S.A.S. released one full-length album called Warlords in 1987.