The title of this thread seems to be asking for examples of singers who can really sing, as in technically fine singers, as in singers with fine voices.

The best singers, in my opinion, are the ones who can sell the song, as in get the point across.

I listen to both extremes and everything in between.

Jerry Garcia had no real singing voice, but I cannot imagine anyone else who could do a convincing job with Black Peter or Warf Rat. Imagine those songs done by John Gary or Al Martino and cringe.