Costante Adolfo Bossi is the brother of the famous organist Marco Enrico Bossi. He was born in Marbegno in 1876 and died in Milan in 1953. He was a pupil of Ferrari at the Milan Conservatory, where he later taught. He was also a teacher for a few years at the Pontifical School and organist of the Milan Cathedral. For organ in a style that imitates his brother he wrote many songs.