老师强调了正确发声对唱歌的重要性。

The teacher emphasized the importance of proper ___voicing in singing.

这位钢琴家尝试了和弦的不同声部编排方式。

The pianist tried various ___voicings for the same chord.

她在会议上大胆发声，表达了员工对不公平待遇的不满。

She was ___voicing the employees' dissatisfaction with unfair treatment at the meeting.