I'd hazard a guess that it's mainly his albums on CBS and Elektra, and those probably got excellent worldwide distribution. His wiki page is pretty interesting: https://en.wikipedia.org/wiki/Sadao_Watanabe_(musician)  

Here is another:   https://www.discogs.com/release/3055240-Jimmy-Rowles-The-Special-Magic-Of

RIP 😔

Based on this, I can move beyond the SQ and dig the music.  Still, I am apt to go small versus the 68 disc set 😃