We don't keep weekly track of scores for our karaoke singers, though I like that idea, but we do hold regular contests. Scoring is done by 1 or 2 staff members and 3 or 4 random patrons, depending on the size of the contest that week. That takes it out of the bar's hands, as I'll explain later, and frees the bar from blame/guilt. We have a lot of exceptional singers, so we judge on more than voice alone: stage presence (do they interact with the audience, dance around a bit, or just stare at the screen), audience approval (does the audience dance in their seats, show appreciation throughout and at the end, or seem disinterested in some way), and vocal ability (are they as creative as they can be with their song, are they on key or pitchy, do they have volume control, do they have a good sense of timing). These things combined come up with the competition scores; so, a FANTASTIC singer who just stands there, belting the song out too loudly (sometimes they forget they're using a microphone), may lose to a slightly lesser singer who dances around and involves the audience, winning their approval. Something to beware of when you start scoring or rating patrons/singers... sometimes the singer's ego gets bruised. While you're trying to keep them coming back to earn a better score, you may also chase them away by not scoring them as well as THEY THINK they should be. We have one lady who is a great singer, but she doesn't always win (for reasons posted earlier). When she doesn't win, she disappears for a while. But she always comes back eventually. She knows WE were only responsible for a small portion of her score. You'd think she'd learn to interact better with the patrons...her judges! Be prepared for the downside as well as the upside of rating your karaoke customers.
Proprietor - Malloy's Pub & Pool