DAYS INSIDE US iTUNES TOP TEN (can't find OOTB data)
Roar - 123 days
Dark Horse - 122 days
Teenage Dream/Firework - 107 days
California Gurls - 97 days
E.T. - 89 days
Last Friday Night (T.G.I.F.) - 72 days
Wide Awake - 71 days
The One That Got Away - 52 days
Part of Me - 38 days
Walking On Air - 4 days
Unconditionally - 0 days
Why is this thread so dead, DH is still in the top three on itunes guys, plus its top 3 on billboard and number one on streaming. It will probably pass ET as her biggest billboard hit too.
, I'll use to create my Karaoke version (I have an instrumental) 
