Hey! Thank you so much for writing to me! It is really appreciated.
Sorry for the late response, but I was really busy, especially since I'm working on my video game (I'm also writing the story and the soundtrack too
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I'm using Cubase at the moment, and EastWest/QuantumLeap instruments, but previously I also tried out Reason. I think both of them is really awesome and it's only preference which one you use. Cubase it a bit more realistic, since it can use the mentioned instruments.
I suggest to buy the Journey Collector's Edition. You get everything with it: the soundtracks, and not only the Journey, but also Flower and flOw, all of them worth their price. I cannot tell you an opinion about Ni No Kuni, since I haven't played with it yet, but I'm planning to get it since from what I've seen from it, it looks really promising.
For Feathers and Tears, the main instrument is a Shakuhachi, a japanese flute which has a bit different sounding from the original flutes. One of my favourite instruments along with piano.
Good luck with your projects, and thank you for being interested in my music! It gives me inspiration and power to continue my work, it is really appreciated!
I'll send you the link of the site of the game in private, so if you're interested, you can check it.