Incertidumbre   Creator:   Los Cuatro Ases ( performer ) Scharron, Mario ( composer ) Publisher.Display:   Mardi Format:   1 sound disc : 78 rpm ; 10 in. Subjects.Display:   bolero Source Institution:   Florida International University Incertidumbre	A bailar se ha dicho   Creator:   Hernández, Rafael ( composer ) Capó, Bobby ( composer ) Flores, Pedro ( composer ) D.R.A. ( composer ) Fred, Benito ( composer ) Scharron, Mario ( performer ) Publisher.Display:   Ijuari Format:   1 sound disc : 33 1/3 rpm ; 12 in. Subjects.Display:   Latin pop (music) Source Institution:   Florida International University A bailar se ha dicho