Croatto worked in Puerto Rico by remaking old Puerto Rican standards such as the plena standard ""La Máquina"" ("The Train's Engine") and a medley of plenas by César Concepción, both rearranged as pop songs. He made also an adaptation of ""El Cocuy Que Alumbra" ('The Firefly That Shines')" from the Venezuelan parranda band Un Solo Pueblo, which was renamed ""A Correr Sabana"" once set to new lyrics written by salsa composer Tite Curet Alonso. Curet and Croatto wrote another firefly song together, this time an original named "Cucubano" (the song was also versioned by the Puerto Rican boy band, Menudo).