Marilia Andrés Casares and Marta Botía met while studying at Madrid's San Agustin School. Originally, the duo dubbed "The Just", and sang exclusively in English. However, once producer Gonzalo Benavides listened to a demo by the duo, he convinced them to begin singing in Spanish.
Initially known as "The Just", the duo initially communicated exclusively in English. Nonetheless, after a producer, Gonzalo Benavides, listened to their demo and was impressed, he encouraged them to switch to singing in Spanish.