这是一个自动选择播放音乐的汇编程序，第一次做但是是原创，绝对，里面通过参考网上代码做了大量的优化，曲谱也是自己写的。-This is an automatically select compilation of music program, for the first time to do but it is original, absolute, which by reference to the code line has done a lot of optimization, and sc