Stone had an unusual, almost humorous tone to his voice.

The content also kept with the humorous tone of the previous series.

Though action orientated, the series was noted for its humorous tone.

One interesting aspect of the campaign is its humorous tone.

His voice lost its humorous tone, and she looked at him sharply.

The series' humorous tone and high level of characterization proved very popular.

The game has a humorous tone, and popular culture references abound.

He was still smiling, though his voice had a less humorous tone.

While he talked in a slow, humorous tone, she kept her little smile.

He kept a humorous tone in an effort not to scare her off.