You can always look up these performers on Wikipedia and Biography. IMDB is also a good place to get information. Biographies in book format are some of the best sources. I have included a list of performers with a link to a source that is credible, but different from the previously listed sources.
The Men
Frank Sinatra – singer
Louis Armstrong (he did write songs, but is more famous for his performances of works written by others)
Vladimir Horowitz – pianist
Andres Segovia – guitarist
Pablo Casals – cellist
Arturo Toscanini – conductor 
Luciano Pavarotti – opera singer
Elvis Presley – Rock Legend
Farinelli – famous castrati opera singer
The Women
Patsy Cline -country singer
Lena Horne – jazz and pop singer
Josephine Baker – singer and dance
Eileen Joyce – pianist
Anna Moffo – opera singer
Antonia Brico – conductor, pianist
Ella Fitzgerald – jazz singer
Maybelle Carter – guitarist, banjo, autoharp, singer