Mine is Blue Ocean Floor with 56 plays.

Your Song by Ellie Goulding - 311 plays

Say It Right, if that counts as a ballad. If not, Retrograde-James Blake with 108 plays.

Christian ballad Uncle DeShawn Ali
what else?

The Midway State f/ Carly Rae Jepsen - Change For You

Bottom of the Ocean- Miley Cyrus- 261 plays

Gravity - Sara Bareilles

Towers by Little Mix, 78 plays.

Unconditionally with 511 plays

Begin Again - 424 plays

Cactus In the Valley by LIGHTS, 738 plays.

We Belong Together: 170-something plays

It depends how define "ballad." I consider Florence + The Machine's "Never Let Me Go" my most played ballad, but that's because I don't think of Taylor's "Safe & Sound" as a ballad.

After Never Let Me Go, it's Begin Again, All Too Well, White Horse, Back To December.

"Save Me" by Nicki Minaj. 249 plays.

Unconditionally comes in 2nd for me with 55 plays. Let me play Uncle again so it can get up there with BOF

Stay by Rihanna?

It's either the iconic "Everytime" or the masterpiece "Unusual You".

The Riots Gone by Santigold.