I remember Frank Harte saying that in traditional singing, the best you can hope for (by which he meant the target you should be aiming at!) is that someone will come up to you afterwards and say: "jeez, that's a great song!". Not "Well sung!" nor even "You did a good job on that one..".

Drawing that response involves taste in selecting songs to learn, care in deciding when and where to sing 'em and skill in interpreting them. If, in additon, you have a wonderful voice - so much the better! But it's not essential.

Regards