Collé as Part of Martelé Violin Bow Technique Martelé, Collé, Hookstroke & Upbow staccato Collé in Other Bowings Martelé can be described as a collé bowstroke, with added forearm movement to lengthen the stroke. Collé can help a martelé stroke by: Helping the hair to bite and release the string. Helping to keep the bow straight during the stroke. ... --- Please register here for VBT+ or Login Username Password Remember Me Forgot Password