I want to sing like the bird sing, no worrying about who hears.我想唱歌像鳥兒一樣唱歌，不用擔心誰會聽到。

Dr. Steve can teach professional singing knowledge to students! 校長能讓教授專業的唱歌知識給學生！

Parents can also detect their children's progress in singing! 家長也能察覺子女在唱歌上的進步！