[1] She became known at a very early age for being a daughter of television star and beauty pageant titleholder Raquel Argandoña de la Fuente and attorney Hernán Calderón Salinas.

Due to the group's success, Calderón's recording company started preparing a solo career for her.

She began taking singing and guitar classes with the Uruguayan singer and musician Gonzalo Yáñez.

[4] At the end of the year, her producing company My Friend obtained a contract with the television channel Canal 13 for a new juvenile teleseries called Antonia.

On 2 January 2008, conflicts between Raquel, her father Hernán Calderón, and the My Friend Entertainment producing company resulted in an abrupt termination of her contract.

Calderón announced that she would begin a solo career as a singer under the stage name Kel, with Gonzalo Yáñez as her producer.

was announced during the Viña del Mar International Song Festival but was delayed due to some setbacks.

[12] They partnered in a celebrity dance competition called Fiebre de baile [es], broadcast in Chile on Chilevisión.