Shankar gave music to four of Ray's classics, beginning with his greatest and the first 'Pather Panchali', 'Aparajito', 'Apur Sansar' and 'Paras Pathar'.
Ray had planned to capture Ravi Shankar during one of his recitals but for some reason the film did not take shape.
The idea, however, still survives in the form of the rough sketches that he made for the film titled 'A Sitar Recital by Ravi Shankar'.
The sketches are now available in the form of a book titled 'Satyajit Ray's Ravi Shankar: An Unfilmed Visual Script', which has been edited by the filmmaker's son Sandip Ray and has been published by HarperCollins.
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In his preface Sandip recalls the friendship that his father and Shankar, who died in 2012, shared and how they came together for the music of 'Pather Panchali'.
"Ravi-ji was already a busy musician when baba requested him to compose the background score for 'Pather Panchali', his debut film. After that he did the music for 'Aparajito', 'Paras Pathar' and 'Apur Sansar'.