 Other works take the use of text as music still further . Vaughan Williams uses a chorus of women 's voices wordlessly in his Sinfonia Antartica , based on his music for the film Scott of the Antarctic , to help set the bleakness of the overall atmosphere . While a chorus is used in the second and third movements of Glass 's Seventh Symphony , also known as A Toltec Symphony , the text contains no actual words ; the composer states that it is instead formed " from loose syllables that add to the evocative context of the overall orchestral texture " . 
