I also received a leak light and nevertheless have some leaks so I is going to be having it again to the tech to get it sorted out. Many thanks for all of the replies. The Chromatic Scale contains all twelve unique pitches in an octave, continuing by half steps. https://play-c-sharp-dorian-on-al91502.blogs100.com/26910335/play-c-sharp-dorian-on-alto-saxophone-for-dummies