Eugène, Charles, Antoine Crosti (21 October 1833 – 30 December 1908) was a 19th-century French baritone and singing teacher.

He wrote didactic works and translates arias and operas, among others Italian: Pagliacci, La Bohème, La Martyre, Zazà, Chatterton... A member of the Higher Council of Education, he ceased his tenure in 1903[6] and continued to give private lessons, singing and scenery lessons.

The vocal breath, sent to the frontal sinuses and striking directly at the upper walls of the palate, contracts the roundness, majesty and softness to which the nasal cavities it passes, without vibrating them, however, add sound still.

When you have acquired this habit, which is not difficult to acquire by any means, you will study yourself to keep, in your chest, as deeply as possible, the breathing that you will have taken, and this, by forcing your thorax by a slight effort, a light pressure, to remain dilated, position that it will have to keep, as much as possible, as long as you sing, so that your chest, which is your body of harmony, will always be in its most beautiful position.

So take a deep breath (as you always have to do, we would have only one word to say) and press constantly, but lightly on your breathing, first to prevent it from rising too early, and then to be able to spend it only with the greatest parsimony and then to force your chest to remain dilated and offer the sound the largest possible center of development.