By using my the higher register of the baroque G altorecorder, without changing the original key of the music, the resulting tone color is more flexible as well as louder.
NPR: Live in Studio 4A: Parnassus Avenue Baroque
2.
" The lowest note of the fourth flute, a B-flat, is a fourth higher than the lowest note of the regular altorecorder, which is referred to by the English as the "common flute.