Daniel Doroteo de los Santos Betancourt, also known as "El Jefe" ("The Boss") and "El Inquieto Anacobero" (5 February 1916 – 27 November 1992) born in Santurce, Puerto Rico, was a singer and composer of boleros, and an overall performer of multiple Caribbean music genres, such as guaracha, plena and rhumba. Daniel Santos was born and raised with his three sisters in Trastalleres, a poor section of Santurce, in San Juan (Andy Montañez would later be raised just two streets from Santos' childhood house).