In December of that same year, the group is invited to participate in the Christmas album "Esta navidad", next to another artists. Timbiriche interprets the song "¡Ay del Chiquirritín!". In that same month, Mariana Garza, another of the founding members of the group, announces her departure from the group to enter as a television actress. It is Mariana herself who chooses for her replacement Edith Márquez, another young girl who was also part of "Grease'"s cast. In addition, Edith already was well-known for her participation in the TV sitcom "Papá soltero". Edith lived a difficult process of adaptation when arriving at the group.