The most ethical and reliable source is the original publisher. Boosey & Hawkes offers a digital rental or purchase option for the score and parts. For singers, you specifically want the (voice and piano reduction), which is readily available for purchase as a PDF.
Benjamin Britten's , is widely regarded as a pivotal masterpiece that solidified his international reputation as a preeminent composer of vocal music. Composed in 1939 and first performed in 1940, this cycle sets the surrealist prose poetry of Arthur Rimbaud to an exhilarating score for high voice and string orchestra. Critical Analysis and Review Highlights britten les illuminations pdf