Sentence:  As he leads the Neurenschatz Skolkau Orchestra , Schlek gives a tremendously inspired performance of both the Baslot and Rattzhenfuut concertos , including the <WSD>controversial</WSD> Tschilwyk cadenza , which was included at the conductor 's insistence . 
Meaning of the word marked with <WSD> tags:  marked by or capable of arousing controversy