Putting the lights in was a pain. In the end we just wound them around from the backside and made the train light up. The music was pretty obnoxious, especially since there's no way to turn it off and just have the lights on. Ripping the 'speaker' out solved that issue and peace and quiet reigned!
In the end, it is a nice little train. The lights are nice and it was a project that dad, kids and grandkids put together. But unless you are a fully functional teen or adult, this could be a challenge.