Oh, Richard! I beg to differ. Reynolds sings quite well in the film, as well as in "The Best Little Whorehouse in Texas." He can clearly carry a melody and never hits a sour note. That's singing! In fact, his voice is reminiscent of Dean Martin's. I'm afraid that you're the one who's blinded.
Love this thread. Here's a link to an incredible series on ALLL worth checking out:
http://thepassionatemoviegoer.blogspot.com/search?q=unwanted+child%2F