In this variation you need to work towards making a resonant sound in the lower part of the bow, and develop freedom of movement there. This freedom will allow you to lift and place the bow back on the string with ease and control.
The stroke uses a small amount of bow at the The end of the bow that houses the screw mechanism, where the hand holds the bow. (Also 'Frog' or 'Nut') or the The place along the bow where the weight is evenly balanced. of the bow and requires a balanced bow hold and good control over the A short quick action that requires a clear connection and then leaving of the string so that the note will ring on after the bow leaves the string. stroke.
While some approaches to collé teach a ‘fingers only’ action , I believe it is more effective to use both an active hand and active fingers for the collé stroke. In this variation we need to play three up-bows in a row. Therefore the fingers need to immediately rebound and spring back to a ‘neutral position’ to get ready for the next up-bow.
Collé is a good way to add articulation to the beginning of a stroke. Much like pizzicato, collé is a short quick action that requires a clear beginning of the note followed by a release of the string to allow the note to ring on. It is also good for the bow hand to feel that it could be ready to play with a collé articulation at any time, for instance to articulate a string crossing or to help left-hand clarity in a slurred passage.