Pretty fun little minimalist ost. I like the album artwork whether it be original or not. 

I love how each track builds as you add layers and phrases. Very satisfying! Especially with all the different melodies playing simultaneously during An Ending and A Longing. I'm a huge fan of layered melody and you pulled it off exceptionally. Plus there's these melancholy undertones to the harmonies you chose that add some real emotional depth to the upbeat rhythms. Great job!  

Menu Song: This is catchy. I like your expression of a small idea and expanding on it. I also like the alternating pan of the clavichord.

A Beginning: I like the bass pedal tone under the chord changes. The slow steady bass drum and the building of layers gives this track nice forward motion.

An Ending: I like the chord voicings you use. The third chord in the A section using the inversion gives it the added tension that makes the fourth chord that much sweeter.

A Longing: I could listen to this track loop over and over. The high register arpeggios and the smooth drum beat are a great backdrop for this melody. 

Overall: I think you have great musical intuition. The theme and variation is evident in each of the tracks and is a strength of your work. I only wish the tracks were longer!