Hello *hugs*
You could have a look here:
https://www.susans.org/forums/index.php/topic,180045.msg1658077.html#msg1658077I personally also like the twin comparison... you basically will be like your male/female twin, with the same sense of humour etc...
and here:
https://www.susans.org/forums/index.php/topic,188309.msg1674885.html#msg1674885You could think about a counselor... preferably a gender therapist... someone to support you and help you along the way... if they are not supportive you might look for another...
you might enter site:susans.org and your state or city at google, and see if there are some gender therapists in your place.
and you could call at the next lgbt center or plannedparenthood near you and ask for some counseling... or ask a school counselor you trust...
there might even be support groups or a gsa with other trans people...
you might say at home you want counseling, either for gender or for emotional purposes, and pick someone who has, amongst others, gender on their list...
Concerning voice, it depends on what you are doing... if hrt might be a possibility etc...
in any way singing should be possible.
Well concerning your body on hrt, many people have reported changes... it simply depends.
And I'd say keep asking questions here... people will try to support you.
*hugs*
