"Yo No Sé Mañana" (English: "I Don't Know Tomorrow") is a song performed by Nicaraguan-American salsa singer-songwriter Luis Enrique, released by Top Stop Music on March 23, 2009, as the first single from his 17th studio album Ciclos (2009). The song peaked at number six on the Top Latin Songs, his highest-peaking single since "Lo Que Es Vivir" in 1992, and was his first number one single on the Latin Tropical Airplay list since "Así Es La Vida" in 1994.[1]