And, really, except that Fenwick seemed a little drowsy and reflective, and that Rosalind had a semitone of consolation in her manner towards him, there was nothing to excite suspicion.
"Somehow Good"
William de Morgan
Fancy saying 'Yes, shut it,' in a confidential semitone!
"Somehow Good"
William de Morgan
Also, a margin of error of only a semitone is as good as could be expected considering the small number of examples on which the averages are based.
"Italian Harpsichord-Building in the 16th and 17th Centuries"
John D. Shortridge