Dramatic and emotional intensity, as conveyed through music, became increasingly important. The "fortissimo" directions "ff" and even "fff" were often to be found in scores, and chromatic scales, tremolos, and intervals such as the diminished seventh heightened tension onstage. Jean Le Sueur, whose "La Caverne" was one of the more influential rescue operas, wrote in his score for "Télémaque" that arias should be sung with "voix concentrée" or in a manner that was "très-concentrè". Long instrumental passages descriptive of storms or battles were also present.