What information do you see in this painting and what artist is trying to show?

From observing this painting...

I see a story of a young musician and a young lady falling in love.  If you look closely there is a young lady on the right side that could possibly be the old lady when she was younger.  If you look closely at the old man, you can see there is a man playing the guitar: a musician.  It seems this love story takes place in Mexico because the two young men are wearing sombreros which originate from Mexico.  Continuing the story, the young lady and the musician were together until they were old.

            Hope this helps!

      ~Hocus Pocus

it seems to me that yes they solo on the chord changes.  coltrane for sure solos on the chord changes. instead of changing scales, they use a different method over the chord changes. this melody is very  unique but may often times even be considered simple, which is quite common in this modal  type. for example, there are changes from the key of minor to major in this piece, which makes it  unique in its own way.