The cornet is a brass instrument similar to the trumpet but distinguished from it by its conical bore, more compact shape, and mellower tone. The most common cornet is a transposing instrument in B♭.
The flugelhorn is a high brass instrument similar to the trumpet and cornet, but with the wider conical bore of a bugle, producing a darker, mellower sound or timbre. Like trumpets and cornets, most f
Cornet
…gives a celebrated solo to the cornet; in the 1946 revision, he removed cornets from the orchestration and instead assigned the solo to the trumpet. Flugelhorn The Cornet Compendium…
A standard 3-valved B♭ flugelhorn
Musikinstrumenten Museum Berlin Flügelhorn in C 1106936, edit 1