i really like stilton, personally i would have played about with the structure of the song, it builds up...and up...and i'm waiting for something to happen, even if its some simple drums to support the melody. i also like the bass synth in the background, but would personally raise it slightly. the ending of the song has the right idea, but the notes become a bit muddled causing the piano to sound a bit out of tune.
nae tschun is another track i enjoy, the drums work well with it, but it's missing this something that would support the drive and flow of the track.
art of destruction reminds me of some noise-core type band i once played in, consisting of manipulating the sounds of cheap keyboards through huge number of pedals! its good!
oh, and reindeer has a great ending to it!
anyways, i hope you take this as positive criticism! you're progressing nicely! x