There are 9 artists by the name of Ana.
1) Ana was the name Ana Johnsson went by before going international. She is most known for the Spider-Man 2 soundtrack theme "We Are".
2) Cuban-born singer Ana Rodriguez was a late 80s teen pop singer who had minimal chart success with songs like "Shy Boys" and "Got To Tell Me Something". She currently records Latin pop music under the moniker Mia.
3) ANA (アナ) is also a Japanese band from the Fukuoka Prefecture signed with the label compactsounds. Read more on Last.fm