What are your top 10 or 20 favorite songs?

Im open to any kind of music, really. I need song ideas because i just got a new iphone and i need music on it. Please answer! It will help a bunch! Thank you! 1 Adele - Tired
2 Adele - Rolling In The Deep
3 Eminem Ft Pink - Wont Back Down
4 Eminem Ft Rihanna Love The Way You Lie
5 Eminem Spacebound
6 Aggro Santos Ft Kimberly Wyatt - Candy
7 David Guetta - One Love
8 David Guetta - Memories
9 Pink - Raise Your Glass
10 Pink - So What :)
11 Tinie Tempah ft. Eric Turner - Written In The Stars
12 Cee Lo Green - Forget You
13 Katy Perry - Last Friday Night
14 Katy Perry Firework
15 Kesha Tik Toc
16 Kesha We R Who We R
17 Amy Winehouse - Rehab
18 Amy Winehouse - Back To Black
19 Harry Potter Deathly Hallows Part 1 Soundtrack
20 Harry Potter And The Deathly Hallows Part 2 Soundtrack