Oh yes! The part of Des Grieux is not only much longer than Cavaradossi, it’s much more demanding as well. Just think of those great scenes with Manon in the second and fourth acts, let alone the contrast between the love song in the first act – «Donna non vida mai» – and the dramatic outburst in the third act, « no, no pazzo son», which is a trial for any tenor. Caravadossi’s «Vittoria!» isn’t easy either. But, think, much more than Cavaradossi, Des Grieux requires the full vocal range from lyric to dramatic. That goes as well for the development of the character.
Source : The New York Times