 The line-up included Grenet (piano); Manolo Castro (alto sax); José Ramón Betancourt (tenor sax); Pedro Mercado (trumpet); Jorge Bolet (piano sub); Enrique Santiesteban (percussion and singer).In 1927 came the premiere of the zarzuela "La Niña Rita, o La Habana de 1830" at the "Teatro Regina", with music by Grenet and Ernesto Lecuona.In this zarzuela, Grenet's number, the tango-congo "Ay, Mamá Inéz", became a huge hit, and remains popular today and is often heard at wedding receptions.