Searching for is more than a technical exercise. It is an act of preservation. You are refusing to let the warmth of analog tape be shredded by lossy compression. You are insisting on hearing Philly Joe Jones’ brushwork as it was played—not as an algorithm guessed it.
It sounds like you're looking for information on a specific high-quality digital release—likely the or Analogue Productions audiophile editions—of Sonny Clark's 1958 jazz masterpiece, Cool Struttin' . Album Overview
Cool Struttin’ in FLAC is the closest we will ever get to time travel. Do not settle for less.
Cool Struttin' – 1958 – Sonny Clark Review | All About Jazz
This fragility is precisely why a matters. The subtle overtones of Clark’s block chords, the rasp of McLean’s reed, and the woody thump of Chambers’ bass are all present in the original master tapes. Lossy formats (MP3, AAC) throw away the high-frequency transients that give these instruments their texture.