With mom.  2014.01.07.  Hualien.  Audacity.  Laptop's built-in mic.

It Is Well with My Soul #494

Yang Quartet. 2014.03.01. Minneapolis. Audacity. Laptop's built-in mic.

I Surrender All #312

With Jonah and Hannah. 2011.12.07. Los Angeles. Audacity.

Yang Quartet. 2014.04.05. Minneapolis. Audacity. Laptop's built-in mic.

With Jan, Julie, and Lindsay.  2014.09.11.  Minneapolis.  Impromptu.  Phone recorder.  One track.

Soprano: Cheryl, GU Mi
Alto: Lindsay, Julie
Tenor: Jed
Bass: Bijie, HU Jian

2015.05.25.  Minneapolis.  Audacity.  One track.

Yang Quartet. 2015.08.02. Minneapolis. Audacity. Chromebook.  Line mic.

Soprano: Cheryl, Lindsay
Alto: Julie
Tenor: Jed
Bass: Bijie

2015.08.27. Minneapolis. Audacity. One track.

Yang Quartet. 2015.09.19. Minneapolis. Audacity. Chromebook. Line mic.

4-part harmony with Hannah.  2012.02.03.  Los Angeles.  Audacity.