1 Applied to sop., ten., etc., a powerful singer with a style suitable for forceful operatic roles.
2 Applied strictly to mus., this adjective signifies mus. written for the stage, but the much more general meaning is mus. of strongly theatrical spirit and effect, e.g. Tchaikovsky's 4th Sym., Berlioz's Symphonie Fantastique, Strauss's Don Juan, Beethoven's Appassionata Sonata, etc.