Upon the success of "Dónde Están los Ladrones?" and "MTV Unplugged", Shakira began working on an English crossover album. She learned English with the help of Gloria Estefan. She worked for over a year on new material for the album. "Whenever, Wherever", called "Suerte" in Spanish-speaking countries, was released as the first and lead single from her first English album and fifth studio album throughout the period between August 2001 and February 2002. The song took heavy influence from Andean music, including the charango and panpipes in its instrumentation. It became an international success by reaching number one in most countries. It was also her first success in the U.S., by reaching number six on the Hot 100.