Copacabana (At the Copa)

A showgirl, a bartender, a gangster with a diamond and a gunshot, all inside a disco-Latin party tune. Barry Manilow's original is pure theater, and karaoke rewards whoever plays the melodrama straight while the room dances. It moves faster and sits a little higher than most of this list, so it suits a confident middle voice rather than a nervous one. The payoff is the final verse, decades later, which works best sung slower and sadder than you think you can get away with.