River Flows in You is a compilation album that collects 13 tracks by South Korean pianist and composer Yiruma. Drawing from Yiruma's six regular studio albums, the selection includes his biggest hit, the title track (number 20 in Germany, covered by DJ/producer Alex Christensen and at one point intended to be used in the movie Twilight), as well as other well-known songs such as "May Be" and "Kiss the Rain," giving the listener a good introduction to Yiruma's melodic and introspective solo piano compositions.
The site link below has 48 reviews on it and a way to download the music. The degree of difficulty is 3 out of 5 stars.
http://www.musicnotes.com/sheetmusic/mtd.asp?ppn=mn0073222