Sentence:  Asked to write a set of voluntaries, Mendelssohn &mdash; who admitted in an 1844 letter to Coventry that he did not understand what the term meant &mdash; fashioned a series of small pieces, then arranged them into <WSD>multimovement</WSD> works for publication in 1845. 
Meaning of the word marked with <WSD> tags:  Divided into several movements.