The songs they chose were bizarre and probably designed to cause problems. Both had/have two defined parts, verse and chorus, that are almost at odds with each other.
Frankly, as someone who detests any prejudice, I hate the practice of the person’s age being stated alongside their name. I don’t see why being ‘old’ debars you from making music. Age is just a number. It’s only if you stop, as the drummer did, that you may have a problem picking it up again. Keep going and you will be all right.