Maria is a little tired of being pranked, as the only female tuba player in the band. But at least today she can practice by herself without any such fears - or so she thinks. As soon as she blows her first note, she can feel that something is amiss. Something is restricting her airflow. Puff harder? Now her breath gets blown back into her face! What else is there to do but try to blow *another* obstruction clear?

Maria is a little tired of being pranked, as the only female tuba player in the band. But at least today she can practice by herself without any such fears - or so she thinks. As soon as she blows her first note, she can feel that something is amiss. Something is restricting her airflow. Puff harder? Now her breath gets blown back into her face! What else is there to do but try to blow *another* obstruction clear?