Joseph Jacques Callaerts (1830–1901) was born in Antwerp, Belgium, and was a student of Jacques-Nicolas Lemmens
at the Royal Conservatory in Brussels, where he won first prize in organ in 1856. He began serving as organist of the Jesuit College
in Antwerp in 1850, he was appointed organist of the Cathedral in Antwerp in 1855, where he had sung as a chorister. He taught organ
and harmony at the Antwerpse Muziekschool (renamed Royal Flemish Conservatory) from 1867 until 1901. In addition to his approximately
60 organ works, Callaerts composed a symphony, two organ/orchestra works, chamber music, an opera, vocal, choral and piano music. Moderate.
(See his other music:
Opus 20,
Opus 21,
Opus 23,
Opus 28).