A babbling brook

No, I'm not talking about meditation nature sounds.  This was the sound I discovered in my office this morning where the HEAT WAS ON!!!!!  The radiator made noises--loud ones--all day.  At times it was a relaxing babbling brook and at other times it sounded like someone peeing.  Still, I was thrilled to  not have to wear a sweater and down vest at my desk.  Here's the brook (the color being one of those Beijing mysteries):