Producer and pianist Sergio George helped to revive salsa's commercial success in the 1990s by mixing salsa with contemporary pop styles with Puerto Rican artists like Tito Nieves, La India, and Marc Anthony. George also produced the Japanese salsa band Orquesta de la Luz. Brenda K. Starr, Son By Four, Víctor Manuelle, and the Cuban-American singer Gloria Estefan enjoyed crossover success within the Anglo-American pop market with their Latin-influenced hits, usually sung in English. More often than not, clave was not a major consideration in the composing or arranging of these hits. Sergio George is up front and unapologetic about his attitude towards clave: "Though clave is considered, it is not always the most important thing in my music. The foremost issue in my mind is marketability. If the song hits, that's what matters. When I stopped trying to impress musicians and started getting in touch with what the people on the street were listening to, I started writing hits. Some songs, especially English ones originating in the United States, are at times impossible to place in clave." As Washburne points out however, a lack of clave awareness does not always get a pass: