Julio Reyes Copello is a Colombian producer, songwriter and record engineer. Throughout his career he has worked with various artists such as Jennifer López, Marc Anthony, Thalía, Chayanne, Kany García, Alejandro Sanz, Paula Arenas, Laura Pausini and Pablo Alborán, among others, as well as receiving four Grammy Awards and seven Latin Grammy Awards.

Paula Arenas Álvarez is a Colombian pop singer-songwriter.