This game was on its own website. There was piano music playing while the user turned tiles to complete a schematic. Water or electric I can’t remember just that the goal was to complete the circuit.
It was very soothing to me years ago for reasons. For reasons, I should like to locate it again.
I think there are any number of these - just do a web search on “water pipe game”
While Dopers have astounded me on finding stuff with little to go on, I do think we’ll need more info, if you can provide it. Can you remember anything else? Maybe a first letter of the site or game, when you played it, something about the music, anything?
If there was water involved, the game was likely a clone of Pipe Dream, AKA Pipe Mania.