I have adored singing ever since I was old enough to produce such sounds with my vocal chords. I had my own little karaoke machine at one point, though I sure managed to find the motivation to sing without it, too. As a child, I was absolutely convinced that I was going to be the next big country music sensation (specifically, the next Dixie Chicks).
The problem with that plan is that, even after years of choir, my vocal ability is merely adequate, at best. My choir teacher had even admitted that my talents lie elsewhere (though I can apparently read music very well).
I still sing pretty much every day, though, and I've looked up techniques to try and improve my singing. I'm not sure that I could ever pursue it as a career; even if I did develop the talent, I tend to get very quiet and shaky in front of others.
But, yes, music is very therapeutic, and I believe that everyone, autistic or not, would much benefit from introducing some sort of musicality into their lives.
[Edited to add]: You seem very passionate about singing, Jen. Judging from what I've heard on your StarMaker profile, you seem to be an Alto (one whose voice naturally fits best in the lower registers of female singing). I like the spunk you put into your songs, especially in your cover of "Bubbly." Keep practicing and keep singing, and your dreams will follow. 
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I am not a textbook case of any particular disorder; I am an abstract, poetic portrayal of neurovariance with which much artistic license was taken.
Last edited by WerewolfPoet on 14 Aug 2014, 10:44 am, edited 1 time in total.