When I first began commuting, I always thought it would be incredibly amusing (or rather, incredibly annoying) to record the noise that the M7A trains make before announcing stops, and use it as a text message alert on my phone. I never actually did it until recently, since the trains I usually ride are of the older variety. Friday I happened to leave work early and ended up on an M7A, so I made a little recording. It is now my text message alert. It could be yours too… I decided to put the noise up for download. Enjoy!