这是一音乐演奏的exe.这是一个音乐程序，按大写字母“A”，唱乐曲“玛丽有只小羔羊”； 按大写字母“B”，唱乐曲“太湖船” 按大写字母“C”，唱乐曲“祝福歌” 按"X"鍵，退出-This is a music exe This is a music program, the capital letter " A" , singing the song " Mary Had a Little Lamb" press the capital lette