Although you've worked hard and expanded your range to sing higher notes, you may find that you can't sustain them. Or if you're singing a piece that has a lot of high notes (as opposed to simply hitting one and coming back down), your voice may get very fatigued.

In both of these scenarios, your problem isn't range: it's tessitura. Tessitura is your comfortable range, in which you can sing the notes consistently, on-pitch, and without strain. The term is also used to describe the average pitch range of a song or choral part.

Let's site and example. Let's say that the tessitura of a number of mezzo-soprano is just an octave to half an octave below the "A" above the middle "C" to the second "A" above middle "C" but they can sing an occasional high C at the extreme of their range. If they're trying to sing a piece in which the tessitura is from high G to high C, they will experience vocal strain and fatigue.

The key is knowing where your own tessitura is, so you can choose songs within that range. You may be able to sing higher than your natural tessitura, but you run the risk of straining your voice.

So, is it possible to raise your tessitura? Again, Yes, but it takes work. The key is breath support, combined with upper resonance. Vocal strain is what you'll get if you try to sing higher notes from your throat without adequate breath support. Over an extended period of time, you could cause lasting damage.

To sing higher notes takes more breath energy that to sing lower ones. You need to use all of your breath muscles--diaphragm, abdominal, spinals, and intercostals--and fully expand your midsection with each inhalation. Keep everything expanded as you exhale except your abdominal. They will control the rate of breath flow.

Focus on your "head voice" or upper resonance once you are breathing properly. Think of the tone as being vertical rather than horizontal, and imagine the sound coming from your forehead and the top of your head. You can compare to like riding an elevator, with your breath as the mechanism that makes the elevator ascend.

You should feel the vibration in your sinuses and the roof of your mouth (soft palate). Your mouth should be horizontally narrow but vertically tall inside. One voice teacher tells her students to imagine trying to swallow something unpleasant, opening the throat enough so that whatever it is won't touch the sides.

Don't try to force anything out from your tone, keep it light. Start with the yawn-slide or the vocal siren. For the yawn-slide, inhale and open your mouth as if to yawn, then exhale on "hoo" or "hee", starting at the top of your range and sliding rapidly all the way to the bottom. Try to start each successive one a bit higher.

The vocal siren is similar, except that it starts at the bottom of your range and goes up. Do it on a hum. As your breath support gets stronger, do the siren up and down several times on the same breath.

Another good exercise is the rapidly ascending and descending five-tone scale. Start in the middle of your range and use either the buzz (also called lip roll or bubble lips) or a vowel sound, such as "oo" or "ah". The pattern is do-re-mi-fa-so-fa-mi-re-do. Start the second pattern a half-step above the first and continue in that manner. Be sure to use good breath support.

Don't worry too much, you can raise your tessitura and sing higher notes more comfortably and easily with a little time and effort. Just be patient, persistent, and realistic.



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