[Harp-L] corner switching question

["John F. Potts" <hvyj@xxxxxxx>]

I'm primarily a lip purser, but i can tongue block and bend while  
tongue blocking.  I use a mixed embouchure when performing since i  
play split intervals quite a bit.

Anyway, i wish i could corner switch while tongue blocking since it's  
easier to play lines with wide intervals that way. Normally, when I  
am tongue blocking, i block holes on the left side and play a single  
note on the right side. i can do that reasonably well. But, when i  
switch and try to play a single note on the left side, i inevitably  
get some leakage on the right side, causing one (or more) of the  
holes I am trying to block to sound.  i just don't seem to have the  
coordination to keep them completely blocked when i tongue switch to  
play a single hole on the left.

Anyone have any suggestions  about how to work on this?

Thanks,

	JP