After I wrote this title, I reminded it was Bill EVANS wrote this tune....  The thing motivated me for practicing contrabass... I played Japanese songs and my own compositions as solo work for Youtube videos, but there are many other melodies that I  like ... One of my motivations for practicing the double bass was to play my favorite melodies  from around the world on this instrument .... As a first step, I played this tune. I like the overall sound and atmosphere of this tune, but at the same time, the harmony or mode or "progression" of this tune is very well done...one of the model tune for me. It is not like "So What" or Coltrane's "Impressions" where there is a simple and clear changement between A and B in the AABA form. When we think of this tune in units of 4 bars, we can see that there are small changement in each 2 bars. (It's a 10-measure tune, so there are two bars extras...) There is only one note changement (a tonal point of view). ...