Danish-Swedish pianist, trombonist, composer, music arranger and bandleader, born April 10, 1915 in Copenhagen, Denmark, died September 11, 1990 in Stockholm, Sweden.

At the age of 14, Jacobsen won a piano competition arranged by Ekstrabladet. After that he played with various Danish and Swedish orchestras. For a period he was active as a pianist and arranger for the Danish radio entertainment orchestra. He was active in Sweden from 1945.