The lips support the reed and mouthpiece inwardly in all directions with equal, relaxed pressure. Pressure is provided by the lip muscles. The chin should remain in its normal position, not drawn back or pushed forward. In general, the saxophone tends to be sharp in both the extreme low and high ranges. The saxophone was invented by Adolphe Sax in approximately 1840.
Some authorities claim it was actually invented a couple years earlier.
In any case, it was patented in 1846.