<iframe width="640" height="315" src="https://www.youtube.com/embed/BN7QCN1syHw" frameborder="0" allowfullscreen=""></iframe>

(합창)

<iframe width="640" height="315" src="
https://www.youtube.com/embed/niejQfl3x0s" frameborder="0" allowfullscreen=""></iframe>

(쏘프라노 연습실)

<iframe width="640" height="360" title="네가 아들을 낳으리니 / 김두완 - 성탄곡" src="
http://videofarm.daum.net/controller/video/viewer/Video.html?vid=v7ae1CI8Qr68x0uCZ0guIHr&play_loc=undefined&alert=true" frameborder="0" scrolling="no"></iframe>

(테너 연습실)

<iframe width="640" height="360" title="네가 아들을 낳으리니 / 김두완 - 성탄곡" src="
http://videofarm.daum.net/controller/video/viewer/Video.html?vid=v10e4GTnTnVnM6tnP6Hf6sT&play_loc=undefined&alert=true" frameborder="0" scrolling="no"></iframe>

(베이스 연습실)

https://www.youtube.com/watch?v=IjIxmNjdOnA