black and white animation of the words secondary sex characteristics over illustration of adolescent boy / animation of hair and muscle growth /... - 五線譜 個影片檔及 b 捲影像00:44青春期
black and white animation of adolescent girl going through puberty / breast and body hair growing / hips widening / voice changing / audio - 五線譜 個影片檔及 b 捲影像00:27青春期
b/w cgi ms several staffs of music filled with notes moving across the screen from right to left - 五線譜 個影片檔及 b 捲影像00:29
young boy learning saxophone with an instructor at home, fostering musical talent - 五線譜 個影片檔及 b 捲影像00:06
young boy enthusiastically learns to play the saxophone with his music teacher at home - 五線譜 個影片檔及 b 捲影像00:13
young boy masterfully practicing saxophone during a home music lesson with an instructor - 五線譜 個影片檔及 b 捲影像00:07
teenage girl engaged in solving music problem using marker on smartboard in school - 五線譜 個影片檔及 b 捲影像00:16
teenage girl solving music problem on whiteboard while male professor is observing - 五線譜 個影片檔及 b 捲影像00:15
female student writing music notes on smartboard while solving exercise with marker in class - 五線譜 個影片檔及 b 捲影像00:10
man playing viola at home: musician practicing classical music on his instrument - 五線譜 個影片檔及 b 捲影像00:19
