Adamson grew up in New York City, where he completed his schooling. Later he attended the University of Kansas and Harvard University. During his time at the University of Kansas, he started writing his own songs, and after completing his studies, he pursued a career as a songwriter. In 1930, he first worked on Broadway, where to Vincent Youmans compositions for the musical Avatars contributed the lyrics. The following year, he worked with Jimmy McHugh and Burton Lane in two other Broadway productions. 1933 Adamson left the Broadway, after he received a contract with Metro-Goldwyn- Mayer. Between 1937 and 1958 he was nominated five times for Best Song Oscar, for the first time in 1937 for the co-authored with Walter Donaldson Title Did I Remember in the movie drama Suzy with Jean Harlow and Cary Grant in the lead roles. In addition to his main work as a copywriter, he also wrote occasionally, including the title music for the TV series Wyatt Earp intervenes. Even after his death in 1980 intervened film producers on his compositions back, it was Around The World in Good Morning, Vietnam played, An Affair to Remember in Sleepless in Seattle and how to get rid of him - in 10 days? and It's A Wonderful World, The Bridges of Madison County.
Adamson was married from 1948 until his death in 1980, the theater actress Gretchen Davidson.