### Clue: Regarding Harcourt and Sheeran, say, as clarinet and saxophone? (6)
### Answer: REEDED 
 ### Explanation: Definition: as clarinet and saxophone
 RE(regarding/with reference to) + ~~EDS~~ ED,ED(~~plural of~~ twice the first name of Harcourt as well as Sheeran, both singer-songwriters).
Defn: …, examples of/say, instruments with vibrating reeds in their mouthpieces.