Yeah, the Carpenters so sickly sweet that they caused instant diabetic shock that no amount of insulin could overcome. But even the most dismissive music fans have to admit that Karen Carpenter had an amazing voice. a Have a listen to her isolated vocal from “Superstar,” their 1971 hit cover of a Delaney and Bonnie song (also later covered by Sonic Youth). No studio trickery, no Pro Tools, no Auto-Tune.
More examples can be found at Dangerous Minds.