There are a ton of new tracks making their Top 20 debuts this week, like Austin Mahone's 'What About Love,' which just inches past Britney Spears' No. 20 single 'Ooh La La.'  Then there's Kesha, who makes her first appearance on the Top 20 with 'Crazy Kids' at No. 18. 

But the biggest debut of the week has to be Macklemore and Ryan Lewis, who shot straight to No. 12 with their equal rights single 'Same Love.' Check out the rest of the Top 20 countdown for this week to see who comes in at No. 1, and be sure to tune in to our weekend radio show (a list of stations can be found by clicking on the button below) to hear all these songs plus more!

Top 20 Songs: Week of July 15 - 21, 2013

20. Britney Spears, 'Ooh La La'
19. Austin Mahone, 'What About Love'
18. Kesha, 'Crazy Kids'
17. Pink, 'Just Give Me a Reason' Feat. Nate Ruess
16. Rihanna, 'Right Now' Feat. David Guetta
15. Miley Cyrus, 'We Can't Stop'
14. Capital Cities, 'Safe and Sound'
13. Anna Kendrick, 'Cups'
12. Macklemore + Ryan Lewis, 'Same Love'
11. Calvin Harris, 'I Need Your Love' Feat. Ellie Goulding
10. Maroon 5, 'Love Somebody'
9. Florida Georgia Line, 'Cruise' Feat. Nelly
8. Bruno Mars, 'Treasure'
7. Justin Timberlake, 'Mirrors'
6. Jason Derulo, 'The Other Side'
5. Zedd, 'Clarity' Feat. Foxes
4. Selena Gomez, 'Come & Get It'
3. Imagine Dragons, 'Radioactive'
2. Daft Punk, 'Get Lucky'
1. Robin Thicke, 'Blurred Lines' Feat. Pharrell

Note: Every Monday, PopCrush will publish a list of our Top 20 songs for that given week. Then, over the weekend, fans can tune in to our national radio show to hear all of these hot songs plus some other amazing pop tunes. To see a list of radio stations where you can hear the PopCrush Top 20 countdown, click here.