那位女低音歌手的声音如此清澈动人。

The ___alto singer's voice is remarkably clear and moving.

这位女低音歌手在合唱团中担任重要角色。

The ___alto plays a key role in the choir.

她喜欢演奏中音长笛，它的音色温暖而独特。

She enjoys playing the ___alto flute for its warm and unique tone.