The Danish composer Launy Grondahl studied violin and composition from the
age of eight, working with such luminaries as Bloch, Gade and Nielsen. At
the age of thirteen he became a violinist in the orchestra of the Casino
Theater in Copenhagen. He composed an early symphony, two string quartets,
and a violin concerto. Then it was off for more study, this time in Paris,
Vienna, and Italy. The Trombone Concerto was written in 1924 during his
Italian sojourn. It is thought that Grondahl had the excellent trombone
section of the Royal Orchestra in Copenhagen in mind when he wrote the work.