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