"The Ketchup Song (Hey Hah)" by Las Ketchup (Lola, Lucía & Pilar) was the surprise hit of 2002. Not since the rise of the fabled "Macarena" in 1996 has a dance, a song, and a sound captivated the dancefloors and imagination of the world like "The Ketchup Song (Hey Hah). Later in 2002 the 4th sister (Rocío) joined the group as well.

"The Ketchup Song (Hey Hah)" was an international sensation, reaching at #1 in Belgium (platinum), Finland, France, Germany (gold), Holland (platinum), Italy (platinum), Portugal, Spain (platinum), Sweden (gold), and Switzerland (platinum). The song has achieved #1 status in Central America and South America.

"The Ketchup Song (Hey Hah)" knocked Eminem from the #1 slot on the European Music and Media single sales chart, which represents all of Europe combined.

The members of the Spanish pop sensation Las Ketchup are Lola, Lucía and Pilar Muñoz, the three multi-talented daughters of Tomate, a renowned traditional flamenco guitarist from Córdoba, Spain. Born and raised in a Spanish region noted for its Andalusian traditions, including flamenco and bullfighting, Lola, Lucía and Pilar have created an infectious highly original sound combining elements of Spanish rumba, Latin pop, Jamaican reggae, and old-school hip-hop.