Esa voz es una mina(1956)

A young miner, married to a lovely woman crippled, lives happily proving to have a wonderful singing voice while hauling trucks in the mine. One day, to hear a clever promoter, gets its hands on an interesting contract to sing in the most cosmopolitan nightclubs, waking him good prospects for a revenue amazement while he meets another woman who might get put endanger their marriage.