An American composer and arranger, Billy May (1916-1991) was a highly influential figure in mid-20th century popular music and jazz. Known for his distinctive "slurping" brass sound and innovative orchestrations, he crafted iconic arrangements for Frank Sinatra, Nat King Cole, and Peggy Lee, significantly shaping the sound of the big band era and beyond. His work spanned film scores, television themes, and numerous hit records, solidifying his legacy as a master of sophisticated and swinging musical artistry.