For the music lovers and learners.Ϊ���ְ����ߺ�ѧϰ�ߡ�

Learn all about music theory and also train your ears in an awesome (free) offline package.�˽����й����������ۺ�Ҳѵ����Ķ�䣬��һ�����£���ѣ� �����߰�

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