Yeah, Clare. That first tune especially, UMMG, is beautifully handled. And it's a walk in the park for Diz. Nice, relaxed tempo, too.
There's a live recording of Dizzy featured with the Ellington band at a birthday party for Duke in Washington, D.C., I believe. He gets a spot and there are a few other guests. I'm sure it came out commercially at some point but I wouldn't know what it's called.
Jazz Party on Columbia. It's live in the studio.