Born: June 12, 1933, White Mound, Texas.
Died: 20 Jul 2025, Austin, Texas.
Buried: Mound Cemetery, Mound, Texas.

Hal was the son of Ruben Sedwick Hopson and Etta Pearl Whitton.
He studied at Baylor University (BA 1954); the Southern Baptist Seminary, Louisville, Kentucky (MSM 1956); and taught church music at Westminster Choir College (1983–84) and Scarritt Graduate School (1984–88).
He has over 1,200 published works to his credit. With a special interest in congregational song, he made a significant contribution to the repertoire of hymn tunes and responsorial psalm settings in newly published hymnals and psalm collections.
His cantata, God with Us, was one of the few compositions chosen by a panel at the Kennedy Center, Washington, DC, to be placed in a capsule during the American Bicentennial in 1976; the capsule is to be opened in 2076.
Active as a conductor and clinician, he was in The International Who’s Who in Music, Cambridge, England, and was awarded the title of National Patron by Delta Omicron, a professional fraternity of musicians.