Effective period / Period of releases: 1965 - 1970

Members: Jorge Matey, José Martinez (3), Miguel Moreno (2)

Spanish pop quintet from Mallorca, active from 1965 to 1975. Also known as "Los Beta Quartet".

Miguel Moreno – vocals (1965-1968)
José "Pepo" Martínez – vocals (1968-1975)
Leopoldo González – bass (1966-1975)
Jaime Palou – drums (1965-1966)
Jorge Matey – drums (1968-1975)
Manuel "Cubanito" Saucedo – drums (1966-1975)
Joan Bauza – guitar (1965-1975)
Javier Cabello – guitar (1968-1975)
Francesc Balaguer – keyboards (1965-1975)