A prolific composer Valentinas Bagdonas has composed over 800 works of various genres. He was the first Lithuanian composer to write concertos for English horn, Lithuanian folk instrument birbynė, and trumpet. Music for children makes a significant part of his output (about 100 vocal, and over 150 instrumental works, sonatas, cycles for piano, accordion, flute, and other instruments). He has also written numerous works for folk instrument ensembles and orchestras. His melodious and lyrical, and sometimes grotesque compositions are marked by national flavour.