Discreet, you are funny mate. Give em a good lashing, excellent. I sing and I practice. I sing along in the car and work out my phrasing but I can't be bothered to learn words, it's another stress that I just don't need. I have them printed out, very big and on the floor or against the monitor. Not every song, some I just remember and some I can't. Singing with good monitors really helps but it's learning to control your voice that is the key. My 8 years of singing Police songs has helped here. I try to balance it all. I try and sing well, know my limits and front the band (and play guitar or bass depending what I'm doing) and I've got a quality PA.