"Now," Genna continued, her tone mellowing slightly, "what news from the far ends of Gwynneth?"

His tone mellowed a bit.

Naja's tone mellowed a little.

"Ye've got to think, boy, before ye make such calls" Bartholemew continued, his tone mellowing as he began to realize the profound effect his harsh words had on his son.

Ehrehin's tone mellowed as he weighed Trip's words.

His tone has mellowed somewhat, but the flexibility and range are still wonderfully intact.

Her tone had mellowed significantly.

The editorial and news columns of the Tribune persistently attacked LDS Church leaders and their influence on politics; but by 1911 the tone had mellowed.

His tone mellowed.

The tone of the writing has mellowed slightly.