It should be the flute.

应该是这个笛子。

youdao

She plays the flute in the school orchestra.

她在校管弦乐队里吹长笛。

《牛津词典》

I play the flute in a wind band for recreation.

我在管乐队吹长笛消遣。

《牛津词典》

In recent years, the archeologists found examples of finely-cut statues in the same area as the flute.

VOA: special.2009.08.18

Today we have different kinds of music to substitute for the flute but you get the point.

今天我们听不同的音乐,取代了长笛,但你可以想象一下。

耶鲁公开课 - 政治哲学导论课程节选

Drinking and listening to the flute, at another time downing water and dieting, now practicing gymnastics and again idling and neglecting everything, and sometimes spending his time as though he were occupied with philosophizing.

小酌及聆听笛音，偶尔饮酒餤美食，有时锻炼体能,有时没事干,什么也不做，有时也花时间,进行哲思。

耶鲁公开课 - 政治哲学导论课程节选

When not writing, he was reading voraciously or playing the flute to professional standard.

ECONOMIST: Historical biography

She grew up playing the flute, sang in school and suspects she got some of her musical talent from her father, semi-professional classical singer.

WSJ: 'This is the top' _ Dutch singer on Broadway debut

In an age before intellectual specialisation, it was not uncommon for a factory owner to read philosophy or for a doctor to play the flute beautifully.

ECONOMIST: 18th-century science