I have an old traffic signal in my shop that has the bulbs set up to blink intermittently. They blink faster as they warm up and then they all end up pretty much lit up most of the time which doesn't have the same effect. I seem to remember toys that reacted to sound/music and was pondering whether the traffic signal could be wired to respond/react to music. I didn't search this forum this time because I am pretty sure this question doesn't come up too frequently.