Hello Andi,
I read the following:
One of the major improvements is made possible by the Synchron Player’s time-stretch feature. Now you can change vibrato speed in real-time using a MIDI controller! Real-time time-stretching also allows you to change the speed of tremolos, trills, portamentos and glissandos by assigning a CC controller to the Synchron Player’s “Stretch Factor” fader.
Can this feature be used with Sibelius and if so, after assigning a CC controller what would be the next move needed?
Many thanks.