I sing and play guitar, acustic and electric, and electric bass as well, i voted voice just because i think i'm better at singing than others but i love too much playing guitar and bass as well as singing...
it was funny cause i have never had any type of musical education before, i have my acustuc qguitar since i was 15 (now i'm 23) and tried to learn myself how to play it... sadly i couldn't, but a little time ago a friend of mine teached me the basics in guitar and i actually can play it, i can play some songs, nothing dificult... i've been trying to play MM Baroque but it's so freaking hard doing it by hear so i can't do it so far from the intro, the chorus solo thingy by now and quit.
But i also like composing my own songs in guitar.
Anyway i think my skills in gtr are like 5, mediocre. But i'm working over it daily so i can could get better.
My voice, ha! i have always loved singing but i wasn't good, plus i was soo shy to sing in public, but since i learned guitar, i decided i wanted to sing. Actually i can't sing while playing guitar, but i dicovered i don't sound that bad as singing, and everyone tells me so XD i also can sing death vocals.
In singing i rate myself at 7 and death vocals at 9, i could get better.
and bass, i think everyone who plays guitar can play bass and visceversa. In bass, i have a 4... i'm ovbiously better in guitar XDD
lately, i've been learning musical programming, mixing, arrangement and composition with software. I'm working with cubase and the first version of hypersonic.