..so I am in Allegro…Eb….and yes, it seems harder but my real issue seems to be that I run out of air in the Singing C..I don’t feel like I’m getting tight…in the video,you suggest that this is a point where people get stuck…I’m not sure how to interpret that and I wonder if that thought being put in my head perhaps contributes to my actions…just a thought🤔..I thank you in advance..Jim