I need help solving a bow stroke mystery!  

Maybe you Cello players might recognize this mysterious bowing phenomena.

This all began because I'd been feeling good about correcting my basic bow hold and gaining better control (while staying relaxed) - it's pretty natural now, but there have been several tunes where my hand demanded changes...  

I'm not ready for every type of bow stroke, yet, but I like to understand what possibilities are/will be available to me. 

So, I revisited all of the great Fiddlerman Bowing videos (beginner - advanced), then headed out online to some favorite sites.  

Found an amazing William Fitzpatrick video I hadn't seen where he talks about "a hundred different bow holds" and when to use different fingers!  Plus much more. 

"Creating and Using Bow Strokes" 

Now, I'm still absorbing all this info, tried a few things... but there's one bowing technique/effect (maybe a multiple or more complex one) that still mystifies me. 

Knowing why we want to be able to bow closer to the bridge or closer to the fingerboard is one thing, but I've seen some extremes - strange angled/slide or sweep across the strings, expressive stuff that just captivates me.  I want to understand it all! 

Admittedly, I've noticed this technique used more on the Cello, like Leo Sanders playing "Stålvalsen" with Mia/Mikael Marin (5th post, The Vals - Nordic genre), starting at 2:24 thru 2:54. 

https://fiddlerman.com/forum/n.....can-it-be/

Shannon Hayden playing Cello, "Noel Nouvelet" (4th post, Christmas Project thread). 

https://fiddlerman.com/forum/f.....lebration/

Jacob Fowler playing Cello, "Mongolian Bowl Dance" (1st post, "Can Violin Sound Like Erhu" thread). 

https://fiddlerman.com/forum/p.....n-a-cello/

The only amazing violin performance I've recently run across, that clearly shows this angled/slide technique along with bowing half way up the fingerboard, is Maria Kaneko Millar's "Sakura" (3rd post, "Can Violin Sound Like Erhu or Kokyu?" thread). 

https://fiddlerman.com/forum/p.....n-a-cello/

Can anyone help me with this "Mystery" bow stroke?

Does anyone know the correct term, any tips or helpful insight into using this angled/sweep across the strings, special effect on the strings? 

- Emily 

Btw, the angled/slide is an audible sound effect, not just a pathway to get the bow from one area to another.