I am in counter-tendency about what is told here.I am not a baritone player, I play it only when I have a marching service with the band,and I don't like the baritone sound with a shallow mouthpiece:I prefer a deep cup with a large diameter and I use a special customed mouthpiece by K&G, size 3C little shank, built for me by Dennis " Kurun" Camilleri.With this mouthpiece I prefer the sound,the high register is easy and the endurance is improved.When I began to play brass instruments in the 60th, the baritone (flicorno tenore) was a permanent member of every wind band,then, going on with the years,it disappeared, replaced by euphonium, (bombardino) that has a mellowness voice, whereas the flicorno tenore makes a sharp sound that is not very appreciated by band directors.
2007 Besson Prestige 2052, 3D+ K&G mouthpiece; JP373 baritone, 4B modified K&G mouthpiece; Bach 42GO trombone, T4C K&G mouthpiece; 1973 Besson New Standard 3 compensated valves, 3D+ K&G modified mouthpiece; Wessex French C tuba, 3D+ K&G modified mouthpiece.