Bill Evans Trio--Gloria's Step from the famous Village Vanguard 1961 afternoon.
The first ten measures--two five-bar phrases.
I have tried to play this tune but with the five-bar phrases and the totally unconventional
chord progression, I never tried it in public.
Obviously not a euphonium ringtone, but listening to Bill Evans play anything was always a rewarding experience.
Last time I saw him live was in Bloomington, IN in 1975. Wound up sitting a couple of booths away from him and Eddie Gomez
at the Waffle house post-concert.
I was dead shocked that Bill Evans was playing in the town claiming to have "the world's greatest music school" but that school
had nothing to do with his presence--he played in a small club off the downtown square. No master class, no hang with the jazz students...
BE was a bit of a recluse, but he and David Baker (who ran the IU jazz program then) were acquainted.
https://www.youtube.com/watch?v=OVEOf7VCNgs