原來專業音樂家要這樣練習樂器！

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你討厭基本練習嗎？你不喜歡練習音階嗎？這集讓我們來告訴你有多重要吧！！！
English Version will be upload ASAP please wait for us!!!!
Btw “Fundamentals” 拼錯了！Sorry~

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