Is it normal to be attracted to a singer's voice?

There is this Finnish metal band that I have been listening to for like 10 years, Sonata Arctica. I've got all their albums and everything, but have never seen them live. But I'm just in love with the lead vocalist, Tony Kakko's voice! Like, when I listen to the songs or hear his voice, I get goosebumps all over because it's so sexy! And he's also an amazing singer. But funnily enough, I don't find him attractive physically, it's just his amazing voice! I don't know what's wrong with me. When he sings, I just get so happy and his accent as well, like his voice is so deep and rich. So anyway, my question is, is it normal to be in love with a singer's voice, but not them in person?