Quote Originally Posted by Sofus View Post
There are also some aditional exercises where you instead
"bend" the valves. For instance you can play the low C, then
press valve1,2&3 (which corresponds to C#) but keep playing
the low C. Continue in same style with other notes.

These exercises can also be found on youtube, I think . . .
The bending exercises are explained well in Mick Hesse's book
"Perfect your Practice for Peak Performance"

You can see an excerpt from the book here: PPPP
The book is available in both English and Norwegian.
Mick's website is located here