Warm-ups are the exercises that we use not just to warm up but to also train our voices. This works by literally reworking muscles to react in a different way than they previously did. Quite often its even a re-training of muscles groups (such as the diaphragm), to do what they used to do, or to eventually respond the way that we want them to with out thinking about it.. It takes a great deal of concentration at first to access these changes. The goal is to practice them enough so that they become second nature. Often I have students who have mastered certain techniques in the studio but haven’t been able to apply them to their own music. First off, this is common. We seem to learn technique in this order: exercises, pieces that we are working on in lessons,then finally everything else we sing. When the student is getting better at the isolated technique, the teacher should recognize this and begin to filter in practical applications for the said technique. If your singing regularly, and not able to apply some of the things that you have learned in class, your rehearsals are a time for that. Say your trying to mix in your upper register.Practice that in rehearsals and save your flip into pure head voice for that performance moment if you don’t feel ready to try your new technique approach. I had developed a good technique after hurting my voice many…(many) years ago. I would not use that approach during performance though. It came so easy that i thought that I was cheating. Remember, great singing almost feels like nothing, and that doesn’t sit well with us singers. We like to feel as if we’re working for something. Well, great technique means NO WORK. So if your having difficulty transferring your voice from the studio to the stage, experiment during rehearsals,don’t work, and sing. Also,…don’t forget the singers best friend. DolceVoce honey/lemon throat spray. it tastes great and it really works to help produce saliva and to lubricate the vocal folds. yep, it really works!