Bruno Mars and the Lumineers continue to hold the No. 1 and No. 2 spots, respectively, on the Top 20 countdown this week!

Meanwhile, indie-turned-pop group Imagine Dragons make their debut with 'It's Time,' rounding out the list. Kesha's next single 'C'Mon' also appears on the Top 20 list for the first time.

Check out which other songs made the countdown below, and be sure to tune in this weekend to hear all 20 of these tracks, as well as the winning About to Pop track by Marina and the Diamonds.

Top 20 Songs: Week of January 14-21, 2013

20. Imagine Dragons, 'It’s Time'
19. Kelly Clarkson, 'Catch My Breath'
18. The Script, 'Hall of Fame' Feat. will.i.am
17. Kesha, 'C'Mon'
16. One Direction, 'Little Things'
15. Maroon 5, 'Daylight'
14. Calvin Harris, 'Sweet Nothing' Feat. Florence Welch
13. Pitbull, 'Don’t Stop The Party' Feat. TJR
12. Alicia Keys, 'Girl on Fire'
11. will.i.am, 'Scream & Shout' Feat. Britney Spears
10. Ed Sheeran, 'The A Team'
9. Maroon 5, 'One More Night'
8. Pink, 'Try'
7. Swedish House Mafia, 'Don't You Worry Child'
6. Rihanna, 'Diamonds'
5. Flo Rida, 'I Cry'
4. Justin Bieber, 'Beauty and a Beat' Feat. Nicki Minaj
3. Taylor Swift, 'I Knew You Were Trouble'
2. The Lumineers, 'Ho Hey'
1. Bruno Mars, 'Locked Out of Heaven'

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.