Sentence:  The Bayreuth Festival opens July 23 with a new production of `` Tannhaeuser '' staged by Wieland Wagner , who is doing all the <WSD>operas</WSD> this time , and conducted by Wolfgang Sawallisch . 
Meaning of the word marked with <WSD> tags:  a drama set to music; consists of singing with orchestral accompaniment and an orchestral overture and interludes