Companies etc Copyright (c) – Discos CBS S.A.I.C.F. Phonographic Copyright (p) – Discos CBS S.A.I.C.F. Published By – Edifon S.R.L. Recorded At – CBS Studios, Argentina Credits A&R – Jorge C. Portunato* Bass, Vocals – Machi* Composed By, Arranged By, Effects [Special] – Invisible (9) Drums – Pomo* Guitar, Vocals – Spinetta* Photography By – Eduardo Martí Technician – Horacio Cusato, Roberto Labraga