Guillaume Rosin

What to say, it is a rosin, a good one so no magic in it, as it is a rosin:) good to have for your bow, but wont play instead of you. You can have better for less money, or you can pay a lot more it depends on you. As for rosins goes, this one is from Brussels so probably work the best in Brussels and places with same climate, as humidity and temperature are related with performance. Play well and in tune please any rosin will do the job fine if its made yor your climate.

Ray Chen uses this rosin. What else can I say? Its pretty cool it even tastes good (just trust me, dont check at home) gives good feel and makes good sound even on the cheap strings. Not as big as I wished to, but still it is perfect. Even the box gives you such smooth feeling when you open it, so it makes you grab your violin more frequently and PRACTICE

Best performance, perfect for my instrument.

I'm using it on my viola, wonderful feeling.