Richard —, author of 1970 novella Jonathan Livingston Seagull (4)
I believe the answer is:
bach
(Other definitions for bach that I've seen before include "dear to the Welsh" , "Brandenburg Concertos composer, d. 1750" , "Johann Sebastian . . . ., great 18th century German composer" , "J. S. -, Ger. composer" , "Relating to stars" .)