Hello, I'm an advertising designer with professional background in broadcasting TV as audio/video editor, author, post producer and commercial creative/maker.
I mean to design, write and editing an effective commercial/promo for your Sibelius like software. I have taken a look at Avid's site for Sibelius and something on Youtube too.
We could feature either stock video clips and custom motion graphics/animation of your GUI.
Please, take a look at my portfolio or search for my channel on Youtube: AI productions
(I can't post my link in the proposal for the website's Terms & Conditions).
And feel free to contact me for further details and information.
Best regards.
A. I.