Happy Optimist Day 開心樂觀日 Feel the joy when a Vocal Coach Teaches Children & Adults to Sing, You will Smile and the World will Become More Beautiful感受一下當這位唱歌老師教小朋友和成人唱歌的時候充滿快樂的樣子，你也會笑一笑世界更美麗
Happy Optimist Day 開心樂觀日 Look on the bright side! Life may have its ups and downs, but optimism keeps the sun shining when everything...
