No matter what your vocal range is, singing at the top of it can often be a struggle. It's not uncommon for us to push ourselves as singers, and strain to reach the high notes. This can easily lead to long-term damage. You should always be sensible when you are pushing your voice, so here are 3 tips to help you sing those high notes with power without hurting yourself!
1. Know your range
This is absolutely where you should start. Knowing your range, and being honest with yourself about it, is going to enable you to play it safe and take care of your voice. This is particularly important when you are singing live. As exciting as it is to watch a singer absolutely go for it, if you are going for it and not taking care of yourself you are going to lose your voice very quickly. You could even do some long term damage! Work out your range, stick within it and gradually build it up. Learn how to figure out the range of your voice.
2. Cord closure
Cord closure is about how much air you are letting through your vocal cords at one time. If you are letting a lot of air through (think singing "hhhhhhhhhhhhhhhhhhhello"), you aren't going to be able to sustain a note for very long because you will run out of breath. If you can learn to control that and have a nice onset (not being too breathy or too harsh) you'll have much more sustain in the notes you are singing. Learn how to improve your vocal onset.
3. Be tension-free!
Having no tension applies to so many different parts of the voice, but it particularly applies if you are singing a high, loud note. If you add tension to the mix it's going to be terrible! Be very careful, respect your voice, and keep everything nice and relaxed. Use mental focus to achieve the high notes instead of physically pushing. A quick exercise you can do to release tension and work from the bottom to the top of your range is the siren exercise. Learn how to do the siren exercise and other exercises for releasing tension on Hannah's singing course!
All of these things take time and patience. Don't expect immediate results overnight, and absolutely don't force yourself to get those results too quickly. Stay relaxed, stay positive, and make sure you record yourself practicing so that you can look back and see how far you've come!