Complex sentence: In 1968 he founded the Steinitz Bach Players, a group of professional players who shared Steinitz's ideals of authentic performance, in order to play Bach's orchestral works and to complement the singing style of the choir in the cantatas and passions.
Split into simpler sentences: In 1968 he founded the Steinitz Bach Players, a group of professional players who shared Steinitz's ideals of authentic performance. The playing style complemented the singing style of the choir in the cantatas and passions.