Black Heart is my least favorite song on the album. It's just...there, not bad but not a standout.
That being said, this is the pop album to beat this year. The production is amazing and more than half the album is absolute perfection.
The only one that comes close is 1989, but it felt unfinished last year and still is a WIP for Taylor's 6th album where she will hopefully release a pop "Speak Now".
I can't do a top 5 to be honest so I'll do a top 7 (with no particular order): All That, Run Away With Me, Gimmie Love, Making the Most of the Night, Your Type, Warm Blood and When I Needed You
1. Let's Get Lost
2. All That
3. I Didn't Just Come Here to Dance
4. Run Away With Me
5. When I Needed You (probably the most oldschool 80s sounding song)
There is even the original tracklist but I'm too lazy to find it now
At one point there were iTunes previews for all the songs when Curiosity was still supposed to be a full length album. It's too bad no one ripped them.
1. Curiosity
2. Talk to Me
3. Call Me Maybe
4. Both Sides Now
5. Just a Step Away
6. Lost and Found
7. Picture
8. Alice in Wonderland
9. Dear Julien
10. Europe
11. Angels
Source is this YouTube video via dratynenyting's comment.
At one point there were iTunes previews for all the songs when Curiosity was still supposed to be a full length album. It's too bad no one ripped them.
It's just...there, not bad but not a standout. 
)
