Although some of these performers have songwriting/composing credits, that is not the majority of their work, nor what they are known for. The links found below are to homepages for each of these artists. If they don’t have a homepage, the link goes to their Facebook page. 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 and can be found for some of the older performers.
The Women
Celine Dion – singer 
Julie Andrews – singer, actress
Britney Spears – singer
Michelle Lea singer, actress
Doris Day – singer, actress
Rihanna – singer
Diana Damrau – opera singer
Barbara Streisand – singer
Ariana Grande – singer
The Men
Tony Bennett – crooner, jazz singer
Johnny Mathis – crooner, jazz singer
Ricky Martin – pop singer, latino pop
Fabian – singer, actor
Michael Crawford – stage singer
Ricardo Chailly – conductor
Placido Domingo opera singer
Yo You Ma – cellist
James Galway – flutist