Just seen this:
https://www.youtube.com/watch?v=dWTz0k5GjzY
wiz
In case it’s not clear at first what this is about (and it wasn’t to me) …
Phil Hardy presents a video soundtrack version of John McSherry’s tune The Wave Sweeper from John’s album Soma, followed by a slow tutorial/walk-through of the tune on high and low whistles.
I thought it was a travel reel for Tahiti. And I was enjoying it … until the guy with the chin whiskers playing the Sindt showed up. 
Feadoggie
I thought it would be about a signal generator for sweeping test tones through audio gear. I’m soooo disappointed.
Oh, now I get it. It’s all about pipe lines.
I like the tune and this video. https://www.youtube.com/watch?v=G4cQvvOMCUI I am easily amused when I discover a video of John McSherry playing whistle with Mike McGoldrick. It’s like watching one whistler play into a mirror.
Feadoggie
Well, if you want to see John McSherry kick it up a notch see this starting at 3:10, although the entire video is worth a watch.
http://www.youtube.com/watch?v=uyNMgigzYIM&list=PLqpGLXcPhzXIJdpiCDjG5_VvqI8lJHi5r&index=18