This site provides an interactive discography to the recorded works of Percy Faith.
The postings below highlight much of the changes over the past couple of years, including the release of a third SACD featuring the quadraphonic mixes of the albums New Thing & Black Magic Woman.
Full audio is available for more than 900 recordings. They can be played in the United States but are not available in all countries. Sony Music owns and provides most of the recordings so I don't know why they restrict access to certain countries.
All of Percy Faith's recordings as a solo artist were added in late 2015. I plan to import all of his backings for other artists (e.g. Johnny Mathis, Tony Bennett) in early 2022.
Please check out samples of Percy's quadraphonic recordings that are currently available on SACD.