多功能的音乐播放器，自行定义按键，每按一键，可选择一首歌曲进行播放，某段音乐令单片机连续播放，显示曲目等功能。播放音乐的同时在LCD上显示演奏歌曲的名称 -Multi-functional music player, define your own key, each press of a button, you can choose a song to play, the piece of music MCU continuous playback, display track funct