GusOrozco – guitar & bass arrangements, programming, keyboardsFernando "Psycho" Vallín – low arrangements, electric bassFernando "El Bueno" Quintana – guitar & bass arrangements, string arrangements, coros, keyboardsHéctor Quintana – corosCarlos Munguía – corosLuis Conte – percussionsJeff Babko – keyboardsBenjamin "Jamie" Muhoberac – keyboardsTommy Morgan – harmonicaSuzie Katayama – orchestra directorCharlie Bisharat – master concert violinistJackie Brand – violinMario de León – violinTammy Hatwan – violinGerry Hilera – violinTereza Stanislav – violinJosefina Vergara – violinKen Yerke – violinMatt Funes – violaJorge Moraga – violaSteve Richards – celloRudy Stein – celloNico Abondolo – contrabassDavid Parmeter – contrabassChris Bleth – oboeJoe Meyer – French hornSteve Becknell – French hornAlan Kaplan – tromboneToño Márquez – lyrical advisorAugusto Chacón – copy editorJosé Quintana – vocal direction
