She made many widely acclaimed recordings, including those of "La vida breve", "La bohème", "Pagliacci", and "Madama Butterfly". The last three paired her with the outstanding tenor Jussi Björling. She was particularly appreciative of Björling's unique talent. In de los Ángeles' biography by Peter Roberts, de los Ángeles noted that "in despite of technical developments, none of the Jussi Björling recordings give you the true sound of his voice. It was a far, far more beautiful voice than you can hear on the recordings he left".