we bought an animated singing christmas tree that has an audio jack that will move it's mouth and eyes to sound ... I took it apart and covered it with a halloween mask.. you can hook up a microphone line to it.. but if it's music it will look like it's talking to a drum beat .. would have to be just a voice on the track played through it to only do vocals ... I couldn't figure out how to sync up two tracks to play at the same time.. one with music and one with voice.. and only have the vocals play into the tree.. so I just hooked the thing up and it sung to music sometimes .. wish I had some electronics background and was able to make something myself.. but I don't.. so I had to cheat
