The Orioles - It's Too Soon To Know, November 1948

   The Orioles, led by Sonny Til, become the first of the young black vocal groups to appeal to a teenage audience, scoring a #1 R&B hit with their debut, "It's Too Soon To Know", the first rock ballad.

en.wikipedia.org/wiki/The_Orioles

  November 6, 1948, Best Selling Popular Retail Records - debut in Billboard National Top 30

 25. It's Too Soon To Know-The Orioles, Vocal Quintet with Rhythm

bandstandtime.blogspot.com/2019/09/almanac-1948-billboard-debut.html

The Orioles in 1948 (Photo by Bobby Thomas).

vocalgroupharmony.com

billboard.com

The Orioles
1948
(It's Gonna Be a) Lonely Christmas - 8 R&B
11/1948
It's Too Soon to Know - 13 US, 1 R&B
1949
(It's Gonna Be a) Lonely Christmas - 5 R&B
A Kiss and a Rose - 12 R&B
Forgive and Forget - 5 R&B
I Challenge Your Kiss - 11 R&B
Tell Me So - 1 R&B
What Are You Doing New Year's Eve - 9 R&B