I'm with you, Elmer: If you love the music, go ahead and sing it. Maybe not all of it on stage, but in the house or driving in the car (with the windows all rolled up) sing whatever you feel like singing.
There's no "shouldn't" when you are singing for your own enjoyment.

The funny thing is, when I was a kid and even into young adulthood(until I reached 60) I sang along on the lead, whether the lead was a baritone, tenor or bass. A lot of the time, I had to stretch it, or go into falsetto, but whithout realizing it, I think that I developed a wide range for singing. Thank God nobody told me I shouldn't do that... or even worse, that I couldn't.

When my son Pasha and I are working together and we listen to the old rhythm and blues, it was a revelation to him when I sang falsetto. He didn't realize that's what some singers are doing, and he was trying to reach those impossibly high notes in his own voice. It opened up a whole new world for him. We make a pretty good ltwo man quartet.

I just received notice that my Church And Street Corner Harmony workshop at the NOMAD festival is ON, so it's time to get back to work with the Messengers. That should be a ton of fun..

Jerry