Porter, not really blindfolded, was kept in the dark about what he was listening to, then asked to comment before it was revealed. (The subsequent identifications have been edited out of the transcript).
1)Dionne Warwick: “People Got To Be Free” Soulful (Produced by Chips Moman and Dionne Warwick, no engineering credit) Scepter (German) SHA-S 401
BP: It's not bad. It's been electronically gimmicked slightly. You can hear it on the horns and voices. It sounds like, to me, a second-or third generation tape that's been equalized to compensate for whatever deficiencies they heard.