With composer Stephen Sondheim’s 90th birthday in March, there have been a great number of articles and programs paying him tribute. So I figured I too should give it a crack.I began to wonder what I could possibly say about one of the most prolific, legendary writers of my generation that has not already been said by others or by himself.I think Mr. Sondheim’s life, career and works would be better served by my directing you to read about it in his own words.“Finishing the Hat: Collected Lyrics (1954-1981) with Attendant …