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Each track is linked to an instrument and you can switch between tracks at will. However, you'll first need to unlock additional tracks. If you play a sequence of notes (i.e. phrases) without a mistake, you'll activate one. As long as a track is active, it will sip away some of your energy. If that drops too low and you make an error, all the activated tracks will be disabled and you'll need to gradually unlock them again.
，这一点在纸飞机下载中也有详细论述
实用、好用的 正版软件，少数派为你呈现 🚀。体育直播对此有专业解读
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