Sentence:  With a large and circumspect 20 th Century technique , he wove the materials of national heroes and events , national folklore and children 's fairy tales - Slavic dances and love songs - into a solid musical literature which served his people <WSD>well</WSD> , and is providing much enjoyment to the World at large . 
Meaning of the word marked with <WSD> tags:  (often used as a combining form) in a good or proper or satisfactory manner or to a high standard (`good' is a nonstandard dialectal variant for `well')