Wow, this sounds like part of the soundtrack of an indie game that i want to play. The production is fantastic and professional, the tracks are diverse and vary in vibe and feeling. The melodies are very nice and catchy, and the accompaniment both supports the melody yet stands very well on it's own.
I like how each level theme tells so much about the place : "Barrenbluff" sounds like the music that might be played in an inn in the town, "Shizukana's Summit" sounds like an ancient piece passed down from generation to generation about a legend of great importance, and "Neo Arcadia" depicts a picture of a dystopian future filled with incredibly advanced technology but no living beings... Or at least that's what i imagined.
Overall, this is absolutely fantastic, and i enjoyed it very much.