30 Years Ago: The 'La Bamba' Soundtrack Puts Los Lobos Atop the Charts30 Years Ago: The 'La Bamba' Soundtrack Puts Los Lobos Atop the ChartsLos Lobos became unexpected stars in the summer of 1987 thanks to their hit cover of Ritchie Valens' "La Bamba."Annie ZaleskiAnnie Zaleski