sentence: charts billboard singles billboard albums certifications credits and personnel musicians rocío dúrcal - ( vocals ) juan gabriel - ( vocals ) enrique guzmán - ( vocals ) mariachi de la ciudad de pepe villela trio los soberanos federico chavez ( electric guitar ) rofrigo mendoza ( bass , guitar ) alberto moreno ( synthesizer ) david gomez oropeza ( piano , synthesizer ) miguel reyes ( drums ) production directed and realized by : enrique elizondo and ( juan gabriel on two songs ) .