these certainly won't lift your mood but that are excellent sad ballads/songs. I picked from a shuffle, will add more if I find more.
And I tried to avoid ones that were recently popular, because I figured they were obvious choices already.
Adele - First Love
Adele - Lovesong
Adele - Make You Feel My Love
Adele - Turning Tables
Amy Winehouse - Love Is a Losing Game
Avril Lavigne - I'm With You
Beyoncé - Heaven
Beyoncé - Mine (featuring Drake)
Beyoncé - I Miss You
Bon Iver - Lost In the Woods
Christina Aguilera - Blank Page
Dawn Richard - Warfaire
Drake - Doing It Wrong
Drake - From Time (featuring Jhene Aiko)
Drake - Too Much (featuring Sampha)
Ed Sheeran - Give Me Love
Eminem - Legacy
Eminem - Mockingbird
Eminem - When I'm Gone
Fergie - Finally
Gotye - Save Me
Imogen Heap - Hide & Seek
Jordin Sparks & Chris Brown - No Air
Kanye West - Say You Will
Kanye West - Bad News
Kanye West - Coldest Winter
Kelly Clarkson - Be Still
London Grammar - Shyer
Mariah Carey - Cry.
Paramore - Hate to See Your Heart Break
P!nk - Run (bonus track from TTAL)
Rihanna - Cold Case Love
Rihanna - Fire Bomb
Rihanna - Get It Over With
Sia - Breathe
Sia - I'm In Here
Taylor Swift - Sad Beautiful Tragic
Kelly Clarkson - 'Already Gone', 'Because of You', 'The War Is Over'
Mariah Carey - 'Petals', 'Bye Bye', 'Bringin' On the Heartbreak'
Miley Cyrus - 'I Miss You', 'Bottom of the Ocean', 'These Four Walls'
