S.T.S is an Austrian pop-rock trio from Graz, Austria, formed in the late 1970s and active primarily from the 1980s onward. The group's core members are Gert Steinbäcker, Kurt “Kutti” Schiffl, and Günter Timischl, the latter's initials forming the band's name. Their music blends elements of folk, pop and rock with Viennese and Austrian singer-songwriter traditions, featuring acoustic instrumentation, melodic arrangements and lyrics in German that often reflect everyday life and regional themes. S.T.S achieved widespread popularity in German-speaking countries and are noted for their accessible songwriting, vocal harmonies and enduring presence in the Austrian music scene.