音樂和樂譜紅色游標會有時間差，紅色游標會慢一點點 Tags: 461 views 15 likes 0 comments Share this: 顏慶賢Ching-Shyan Yen About author 1510 subscribers viewes https://www.youtube.com/channel/UCgDvkLVSkKCrVWPjrVSVEfQ View all posts
