Starthrower,
Here are a few of my favorite Ellington recordings from the 1950s onward (excluding discs that you already have):
Masterpieces by Ellington (Sony, 1951)
Long-form renditions of his classics, taking advantage of the new long-play format. "The Tattooed Bride" is a highlight.
Ellington Uptown (Sony, 1951)
Includes one of the best versions of "Take the A Train" ever, sung by Betty Roche.
Piano Reflections (Capitol, 1953)
Highlights Ellington the
pianist in a trio setting.
Such Sweet Thunder (Sony, 1957)
Music inspired by Shakespeare.
Happy Reunion (Doctor Jazz/Sony, 1958)
Small group dates featuring Jimmy Hamilton, Johnny Hodges and Paul Gonsalves. Not released until after Ellington's passing. Ellington referred to his massive amount of unreleased music as the "stockpile," knowing that it would be released eventually.
Anatomy of a Murder (Sony, 1959)
The soundtrack to the Jimmy Stewart/Lee Remick movie didn't hit me all that hard at first. But the more I listened, the more I admired it. Now I love it.
The Great Paris Concert (Atlantic, 1963)
Cootie Williams returns to the fold, and he sounds
fantastic.
All-Star Road Band, Vol. 1 (Doctor Jazz/Sony, 1964)
Another stellar live performance. The middle-60s band was one of Duke's best.
The Far East Suite (RCA, 1966)
"Ad Lib on Nippon" is the highlight, but the whole album is great.
...And His Mother Called Him Bill (RCA, 1967)
Ellington pays tribute to Strayhorn after Strayhorn died. "Lotus Blossom" will break your heart.
The Private Collection, Vol. 5: The Suites (Atlantic/Saja, 1969, 1970)
Some of Duke's greatest music and totally unique. Paul Gonsalves is sublime.
It took me a long time to find my way into Ellington's music. But when I finally did, I fell for it
hard. Now, he is doubtless the first artist that I would take to any desert island, my very favorite musician.
One last recommendation: The cheap Sony compilation
The Essence of Duke Ellington was instrumental (no pun intended) in helping me find my way inside Ellington's music. It collects music from (mostly) the latter half of the 1930s. I'd strongly recommend giving it a listen too. It really opened my eyes. Songs like "Solitude" and "Azure" are POWERFUL music. The music from this era "unlocked" Ellington's other music for me.