Santa Y Su Gente – Urgente ( 1974 )
Bass – J. Carlos Mendoza*
Congas – Santiago Salas
Drums – Kruppa Quinteros*
Electric Piano – Mario Lecaros
Guitar – Lautaro Rosas
Percussion – Orlando Avendaño
Recorded By [Técnico de Grabación] – Franz Benko L.*
and info of the great Lautaro Rosasin youtube: