How can i strengthen my voice to sing both alto and soprano?

Try doing exercises that go up and down. Those will help you stretch your lower range while keeping your upper range. Doing simple runs and arpeggios will help.

You really should try to get private voice lessons. That's the only way to improve your singing, really. I recommend the following website:

If you have no trouble singing soprano, and prefer singing soprano, then stay in the soprano section. Don't let the choir director push you into another section because that section needs your voice. This happens all the time. Stand your ground! I played clarinet, for instance, from 4th grade all the way through high school, first chair in both band and orchestra. In the 7th grade the band director tried to have me change to tuba! My parents had a fit, fortunately, and wouldn't allow it. It was just because no one else could learn to play the instrument as fast as he needed it. Not to digress here, but I'm sure you get the point. It's your voice, you get to decide how you want to use it.

You can extend your range but alto and soprano are as much about timber as they are about range. My advice is to see a voice teacher (NATS.org). Choir teachers are notoriously stupid when it comes to vocal pedagogy, if you can sight read well you "must" be an alto. Please do not fall into that trap... find a voice teacher to listen to your voice and help. Best wishes!

Your voice may naturally be one or the other; it might not be possible for you to sing both equally well. Or you might be a mezzo soprano, where you can't go quite as high as a coloratura soprano (the ones that sing all the way up in the stratosphere, think D and E two octaves above middle C), but you go lower than they do (into high alto ranges like the F or E below middle C). Really, you should have a voice teacher assess where your voice is right now. Even if you sing alto in choir (assuming you can do this without hurting your voice, of course), singing soprano songs with a voice teacher should keep those top notes up there. (P.S. In elementary school I was switched from soprano to alto because there weren't that many strong altos. Then in middle school and high school I was a soprano. Now in college I am a mezzo.)

As a music education major, I would suggest doing vocal warmups that really stretch your lower register. Building a good foundation in the lower register will allow you to better support your head voice in the upper register of your voice. Try an exercise starting at the lowest point of your lower register, such as a simple "Do-Sol-Do", and move up by a half step, making sure that you continue have a strong chest voice sound. Good luck!

Yeah!!!!! I'm both and Alto and Soprano,so what you should try and do is practice those alto songs at school or where ever then at home practice using your soprano voice to keep your voice within that range too. if you keep using both octaves you wont lose your soprano voice. It really works and I'm constantly switch from Alto to Soprano at my school!

Try doing the cadenzas from arias or operas by Mozart. Take it easy at first and gradually work farther up and down the register. Try to feel your voice in the center of your head behind your nose when singing high, and in your upper throat just below your jaw for low parts. Be careful, however, not to sing louder than feels comfortable when making a conscious effort to work your lower-frequency range.

vocalize. ask your choirmaster to help you vocalize. you may even "widen" your vocal range by doing several exercises. don't feel frustrated because you sing the alto part and you feel that you're losing your soprano voice. alto part is usually more difficult than the soprano part. so that means you are a good singer because can sing both parts. also there is a difference when you sing solo and in a choir. when you are in a group you have to blend in with the other members. that might be the reason why your choirmaster asked you to sing the alto part. Look for CONCONE pieces and practice regularly.. I'm a chorale member for more than a decade now and singing is a continuing process. you have to do certain things to keep your whole system in tune. never stop the exercises if you want to develop your skill. and never abuse your voice. you are a singer so it is your life..