I first heard of this gentleman about 2 months ago when I watched a universe/nature timelapse video. I was moved to tears with the images and the music combined, so looked into it more. I found out who the composer was, and then found this box set.
I'm so thrilled with it, and can't believe how such simple music can be so utterly powerful. I'll be buying more of his music as and when I can afford it. I'm not sure how well known he is, but I hope a lot of people are listening to it, he deserves a massive audience.