Robinson

Assuming we're talking about the musician known for singing "Georgia On My Mind."

On the other hand, the vocalist & arranger who led the Ray Charles Singers was named

Charles Raymond Offenberg.


Under the heading of obscure trivia—this won't be on the test—
The Russler's mother was born on Ray C. Robinson's birthday,
less than 100 miles from his birthplace (in Georgia, of course), &
The Russler's son was born on C. Raymond Offenberg's birthday.


Ray Charles Robinson & Charles Raymond Offenberg both died in Beverly Hills, California.