My offering:

Miles Davis – The Complete On The Corner Sessions. It covers the period 1972-1975 and material recorded for On The Corner, Big Fun and Get Up With It. There is over six hours of music, three of which had never been released before. Only The Molester, a mix of Black Satin issued as a single, is missing. There are over two dozen musicians, reflecting how experimental Miles was at this point in his career. Unlike it’s predecessor, The Complete Jack Johnson Sessions, there are fewer takes of the same track. I’ve owned it for nearly twenty years and I am still to fully drink it all in.