gē / shǒu / zài / yǎn / chàng / shí / méi / yǒu / zhǎo / zhǔn / zhǔ / yīn / suǒ / yǐ / zhěng / duàn / xuán / lǜ / tīng / qǐ / lái / bù / wěn / dìng歌手在演唱时没有找准主音,所以整段旋律听起来不稳定。The singer did not find the tonic accurately, so the whole melody sounded unstable.