I think people missed the point of this thread? The OP wants to know the singers who are famous enough to be known only by their first name. I mean, yes lots of singers only use one name, but what singers can you say like "britney" and you instantly recognise it as Britney Spears.
Britney is the best example of them all.
Best Singles of 2013 (October/November) My Twitter
1. Avril Lavigne - Let Me Go 2. Paramore - Still Into You 3. Miley Cyrus - Wrecking Ball 4. P!nk - True Love 5. Lady Gaga - Applause