 Also noted were the extravagant liberties that he could take with the text of a score.Berlioz tells how Liszt would add cadenzas, tremolos and trills when he played the first movement of Beethoven's "Moonlight" Sonata and created a dramatic scene by changing the tempo between Largo and Presto.In his "Baccalaureus letter" to George Sand from the beginning of 1837, Liszt admitted that he had done to gain applause and promised to follow both the letter and the spirit of a score from then on.