This pair of brothers, members of the Tabajara tribe of northern Brazil, were one of the most unlikely successes of the space age pop era. Nearly 20 years after they first began recording professionally and in the midst of the twist craze, they had a Top 10 pop hit with their cover of "Maria Elena," a Mexican folk tune first popularized in the U.S. by Jimmy Dorsey. RCA and their promoters have always drawn a veil of mystery around Los Indios Tabajaras, so it's tough to trace their early years accurately.