I'm checkin' out goombye

I'm checkin out goombye (Billy Strayhorn/Duke Ellington)

Ellington wrote the music in 1939. Billy Strayhorn the lyrics.

There are several excellent recordings of it, one of my favourites is with Rosemary Clooney and the Michael Feinstein Big Band (1991).

This big band arrangement starts with an optional small telephone conversation between singer and trombone (not on audio-example). There is a swingin tutti in the middle where the horns build up their music and 2nd trombone player gives a soloing answer. Also an 8 bar solo for the 1st alto. Both soli are both written out and chord-symbols.  

The key is B flat but after the tutti it modulates to C.  

This is a recording of the 50 years Anniversary Concert of ex-students of the Dutch Havo/vwo voor Muziek en Dans, the preparatory course of Codarts, the Rotterdam conservatory. Vocalist is Kim Hoorweg.