On 30 November 2010, Mexican singer Cristian Castro released "Viva el Principe" ("Long Live the Prince") which includes a virtual duet with José José on "Lo Pasado, Pasado" and a poem recited by him. In the poem, José conveys that the singer cannot live if he cannot sing ("Ya no podrá vivir, si ya no canta"); an allusion to losing his singing voice. Rafael Pérez-Botija was involved in the production of the album. The success of "Viva el Principe" helped revive Castro's career. Castro released another tribute album to José José titled "Mi Amigo El Príncipe" ("My friend the Prince").