That is sad.
I watched him and the group perform on that PBS special many times. He was the one that sings the high notes in " Little Darlin' " , correct? If so,he had a heck of a voice.
I just this past December,finally, found a "Best Of The Diamonds : The Mercury Years" CD. As well as the original 45s of One Summer Night & Soft Summer Breeze and Love-Love-Love.
All together,the Diamonds had 15 hits :
Top 40 hits (from Billboard Magazine) :
"Why Do Fools Fall In Love" – Debut on 02/18/56, Peaked at #12.[5][6]
"The Church Bells May Ring" – Debut on 04/21/56, Peaked at #14
"Love, Love, Love" – Debut 06/23/56, Peaked at #30
"Ka-Ding-Dong" – Debut on 09/08/56, Peaked at #35
"Soft Summer Breeze" – Debut on 09/22/56, Peaked at #34
"Little Darlin'" – Debut on 03/16/57, Peaked at #2 for 8 weeks (Gold discs|Gold)[7]
"Words Of Love" – Debut on 06/24/57, Peaked at #13
"Zip Zip" – Debut on 08/26/57, Peaked at #16
"Silhouettes" – Debut on 11/04/57, Peaked at #10
"The Stroll" – Debut on 12/30/57, Peaked at #4 (Gold)
"High Sign" – Debut on 04/14/58, Peaked at #37
"Kathy-O" – Debut on 07/28/58, Peaked at #16
"Walking Along" – Debut on 10/27/58, Peaked at #29
"She Say (Oom Dooby Doom)" – Debut on 01/26/59, Peaked at #18
"One Summer Night" - Debut 07/03/61, Peaked at #22
May he rest in peace.