Singing pipe

This is one of the many singing pipe you can find in the abandoned iron mines. On this evening, water level was very high and I made a big dam, in aim to make the pipe sings. Without the dam, it was flooded. This is definitely not the best singing pipe, but this is a rare one where air is good and where I can stay more than 2 minutes. On the other places I know, air is extremely bad (and dangerous). That's why I made a break here, recording my loved pipe, seated on the cold iron ground. Could you think that exactly now, when you're hearing this sound, the pipe is still singing probably a completely different song, because of a constantly changing rain ? I often think about it. How is the song today ?