Evensmo, in his solography, mentions this session:
SELDON POWELL QUINTET NYC. July 7, 1956
Seldon Powell (ts), Hank Jones (p), Barry Galbraith (g), Milt Hinton (b), Osie Johnson (dm).
Three titles were recorded for Epic:
Stoozie
C. J.’s Brother
Serenade In Blue
His comments on the session: Pleasant, nice session with SP at his very best. Two fine medium swingers are most notable, but the beautiful and lighttoned version of ”Serenade …” will be your lasting memory!
I could not find any record containing "Serenade in Blue" on Discogs, or on streaming services. Does anyone know if it has ever been released (and even better, if you have a copy of the recording, please let me know...).
EDIT: I found it!
https://www.discogs.com/master/1022100-The-Rhythm-Section-Rhythm-1
From https://www.everythingjazz.com/story/the-tiberi-tapes-a-new-addition-to-john-coltranes-discography-for-2026/
The slow speed kind of explains the pitchy quality of the recordings. It often sounds to me like the speed is off and the pitch not standard.
https://thumbs.worthpoint.com/zoom/images1/1/1225/17/vintage-magnavox-tr-100tape-recorder_1_d250f172475f7aa8e879a1a41bdb861b.jpg