 The other three albums in which the two artists had worked together are "Quién Dijo Ayer", in which Torres helped producing the singles "Quién" and "Quiero", and offering additional work on the new versions of Arjona's hits; "5to Piso", and "Adentro", respectively.Also, in the album, Arjona returned to his classic and trademark sound, which Torres has helped crafting it since six years now, after the drastic change he made in "Poquita Ropa".On that album, the artist made use of the fewest instruments possible, simplifying his sound, and introducing what he called a "stripped-down version of his music".