Based on radio spins, chart performance and overall response from fans, PopCrush is serving up another list of the Top 20 songs for March 18-24. This week, Bruno Mars, Jessie J, Adele, Katy Perry make appearances on our Top 20 countdown, and a bunch of other hitmakers making the cut, as well.

Mr. Mars is still dominating with his somber and moving 'It Will Rain,' while Jessie J is also riding high with her bubbly love song 'Domino.' Of course, the seemingly unstoppable Adele makes two appearances on our countdown, as does Katy Perry. Some other notable tracks include alternative crossover artist Gotye and his haunting song with Kimbra called 'Somebody That I Used to Know,' as well as Gym Class Heroes' bubbly tune 'Stereo Hearts,' fun.'s anthemic track 'We Are Young,' and Flo Rida's club-ready jam 'Good Feeling.'

Check out our list of the Top 20 songs for this week, and be sure to tune in to our national radio show this weekend (see a list of radio stations that will broadcast the PopCrush Top 20 countdown below) to hear all of these songs in addition to some other great pop tunes.

Top 20 Songs: Week of March 18-24, 2012

20. Gym Class Heroes, 'Stereo Hearts' Feat. Adam Levine
19. David Guetta, 'Without You' Feat. Usher
18. Jason Mraz, 'I Won't Give Up'
17. Flo Rida, 'Good Feeling'
16. The Wanted, 'Glad You Came'
15. Gotye, 'Somebody That I Used to Know' Feat. Kimbra
14. Coldplay, 'Paradise'
13. Katy Perry, 'The One That Got Away'
12. fun., 'We Are Young' Feat. Janelle Monae
11. Maroon 5, 'Moves Like Jagger' Feat. Christina Aguilera
10. Rihanna, 'We Found Love'
9. Adele, 'Rumour Has It'
8. Train, 'Drive By'
7. Christina Perri, 'A Thousand Years'
6. Gavin DeGraw, 'Not Over You'
5. Bruno Mars, 'It Will Rain'
4. Jessie J, 'Domino'
3. Katy Perry, 'Part of Me'
2. Adele, 'Set Fire to the Rain'
1. Kelly Clarkson, 'Stronger (What Doesn't Kill You)'

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.