Hernández's works' include "Ahora seremos felices" (Now We Will Be Happy), "Campanitas de cristal" (Crystal Bells), "Capullito de Alhelí", "Culpable" (Guilty), "El Cumbanchero" (also known as ""Rockfort Rock"" or ""Comanchero" (sic)" to reggae aficionados), "Ese soy yo" (That's Me), "Perfume de Gardenias" (Gardenia's Perfume), "Silencio" (Silence), and "Tú no comprendes" (You Don't Understand), among 3,000 others. Many of his compositions were strongly based on Cuban musical idioms, such as the guaracha's "Cachita" and "Buchipluma na' ma'", which were often mistaken as songs by Cuban authors. His music became an important part of Puerto Rican culture.