male professor explaining notes on sheet music as students are listening carefully around piano - 大型三角琴 個影片檔及 b 捲影像00:13
male professor explaining notes on sheet music as students are listening carefully around piano - 大型三角琴 個影片檔及 b 捲影像00:07
male professor explaining notes on sheet music as students are listening carefully around piano - 大型三角琴 個影片檔及 b 捲影像00:10
male professor explaining notes on sheet music as students are listening carefully around piano - 大型三角琴 個影片檔及 b 捲影像00:19
dedicated male and female pianists concentrating deeply while playing duet in music class - 大型三角琴 個影片檔及 b 捲影像00:11
dedicated male and female pianists concentrating deeply while playing duet in music class - 大型三角琴 個影片檔及 b 捲影像00:11
dedicated male and female pianists concentrating deeply while playing duet in music class - 大型三角琴 個影片檔及 b 捲影像00:09
