Song playback system

A mobile terminal configured to be in communication with at least one song server in communication with at least one karaoke TV player (KTV player) configured to upload a song list to the at least one song server, the mobile terminal comprising:

• an input unit;
• a display unit;
• a processor;
• and
• a storage configured to store a plurality of instructions, which when executed by the processor, cause the processor to:
• obtain, from the song server, all information of the at least one KTV player registered in the song server and display the information of the KTV player on the display unit, wherein the information of the KTV player comprises location information of the KTV player, a room number of a room of the KTV player, and a usage status of the KTV player;
• select, in accordance with a user selection on the display unit, a KTV player and generate a room booking request, and send the room booking request to the song server to book the room number of the KTV player;
• obtain, from the song server, the song list of the KTV player and display the song list on the display unit;
• select, in accordance with a user selection on the display unit, at least one song from the song list and generate a song playback list according to the at least one selected song;
• and
• send the song playback list to the song server, wherein the song server provides corresponding music scores and pitch curves for the songs, sends the corresponding music scores and pitch curves to the KTV player, and the KTV player plays the at least one song with the corresponding music scores and pitch curves synchronized to the at least one song.