Here the knowledge is increasing slowly and steadily as come across 4 new Ragas. As is explicit in the painting, the flow water is steady, limited but forceful.
The knowledge of music is increasing as the awareness & intricate combinations create an indelible impression on the mind. Newer perspectives and cultural influences on classical style of music come to the fore & now learning has a new dimension.
With considerable time spent in learning, our knowledge is like this river, deep and calm, flowing ins a singular direction where we are happy with our consistent efforts at understanding music.