This was part of an email I received today. The cover in the article is that of the Columbia CD reissue I have. The Analogue Productions Vinyl reissue has a different one, I believe the original cover. I'll give them both. Mark.

Masterpieces by Ellington
Duke Ellington's Best Album?
Fred Kaplan celebrates what he rightly regards as one of Duke Ellington's best and least known albums. It was called Masterpieces By Ellington and was one of the first 12-inch LPs. It appeared on Columbia's Masterworks label, rather than on the standard Columbia.
I confess I'd never heard the album, until I was working with Michael Brooks on a run of Ellington Columbia titles to reissue. The album consists of only four tracks, all in the 8 to 15-minute range. Ellington and Strayhorn wrote exciting new arrangements for Solitude, Mood Indigo and Sophisticated Lady, with a variety background horn parts to support the long string of solos.
The result is what would seem to be an extended jazz session, but is actually a revelatory exposition on the art of arranging in jazz. -Michael Cuscuna