Los Sonidos De FM's "Tema De Los Adolescentes," one of the all-time grooviest slices of Latin soul, was buried as the B-side of a very lightweight and downright forgettable instrumental. Los Sonidos De FM was a studio group that was the official house backing band for RCA Mexico, who released a few instrumental LPs between 1969 and 1975. Sola was a Mexican singer who released the Un Muñeco de Madera LP, but sadly, there isn't much information about her. However, this track was written and arranged by the Spaniard Manuel Alejandro, who explores funky Afro-Cuban rhythm. Sola's vocals are the most powerful here, seeing this track into psychedelic territory.