Karaoke with 2 microphones and a music box has 2 adjustable microphones with light effects, 10 preset demosongs, applause and cheers from fans, activation button for light effects, recording and playback of your own melodies, voice changer effects. Karaoke function to mute the vocals in songs so you can sing alone with only the melody. Connection to MP3 player, smartphone, iPod, CD player, etc.includes cable.