This is a huge body of work. For me the older stuff can be hard to listen to - I just have a lot of trouble getting past the noise and artifacts of the recording process.
Here are a few more to consider.
Duke Ellington Meets Count Basie - two bands playing as one
The Great Summit - Louis Armstrong and Duke Ellington - fab
Side by Side - Duke Ellington and Johnny Hodges
Back to Back - Duke Ellington and Johnny Hodges
both these are small ensembles with Hodges on horn and Ellington clearly featured on piano
Francis A & Edward K - Old Blue Eyes and the Duke who cares for him as carefully as he does Ella and Rosemary Clooney - course you gotta like Sinatra to like this one
Live In Swing City: Swinging With The Duke - Wynton Marsalis and group out of Lincoln Center
Here are a few more to consider.
Duke Ellington Meets Count Basie - two bands playing as one
The Great Summit - Louis Armstrong and Duke Ellington - fab
Side by Side - Duke Ellington and Johnny Hodges
Back to Back - Duke Ellington and Johnny Hodges
both these are small ensembles with Hodges on horn and Ellington clearly featured on piano
Francis A & Edward K - Old Blue Eyes and the Duke who cares for him as carefully as he does Ella and Rosemary Clooney - course you gotta like Sinatra to like this one
Live In Swing City: Swinging With The Duke - Wynton Marsalis and group out of Lincoln Center