Sentence:  The conductor 's preoccupation with the business of starting and stopping caused occasional raggedness , as with the first orchestra entrance in the Fourth Piano Concerto , but when he put his deliberations and obsequies aside and <WSD>let</WSD> the music move as designed , it did so with plenty of spring . 
Meaning of the word marked with <WSD> tags:  make it possible through a specific action or lack of action for something to happen