2018

Kendrick Lamar – [American]
(born June 17, 1987) 

"For distinguished musical composition by an American that has had its first performance or recording in the United States during the year, Fifteen thousand dollars ($15,000)."

1996

George Walker – [American]
(June 27, 1922 – August 23, 2018) 

"For distinguished musical composition by an American in any of the larger forms including chamber, orchestral, choral, opera, song, dance, or other forms of musical theatre, which has had its first performance in the United States during the year, Three thousand dollars ($3,000)."