Mariah Carey - The Art of Letting Go (where to start... no music video, no promo at all except a live performance, no radio support, no-thing ! That masterpiece deserved a better treatment...)
One Direction - You & I (it deserved a better music video, their looks were absolutely tragic in it and it was a huge flop because they never promoted it...
)
Adele - Cold Shoulder
Ariana Grande - Put Your Hearts Up (the fans always act like this song never happened, probably because it was a flop, Ariana was still relatively unknown and orange in the MV...)
It deserved to be #1 for at least six months. 
