There's easily another LP's worth listed in Cuscuna's BN discography, and listed as 'unreleased' not 'rejected' and I honestly don't trust his notion of what's worth putting out. The 3 Sounds were a working band and very consistent, until they weren't.
The Three Sounds
Gene Harris, piano; Andrew Simpkins, bass; Donald Bailey, drums; Dick Bock, producer.
The Lighthouse, Hermosa Beach, CA, June 9 and 10, 1967
Still I'm Sad
Blue Note 45-1935, BLP 4265
June Night: Just Give Me A June Night / The Moonlight And You
Blue Note BLP 4265
I Thought About You
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Summertime
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Makin' Bread Again
Blue Note 45-1935, BLP 4265
Here's That Rainy Day
Blue Note BLP 4265
Blues March
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Never Say Yes
Blue Note 7243 5 23995 2 9
River Shallow
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Sunny
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Bad Bad Whiskey
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C Jam Blues (set call)
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Sylvie
unissued
Like Someone In Love
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Georgia On My Mind
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Goin' Out Of My Head
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Yesterday
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The Shadow Of Your Smile
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Stella By Starlight
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Bluesette
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Makin' Whoopee
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Cute
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Sherry
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It Was A Very Good Year
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Li'l Darlin'
https://www.jazzdisco.org/blue-note-records/discography-1967-1968/
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