Iggy Azalea and Ariana Grande perform onstage at iHeartRadio Ultimate Pool Party

Iggy Azalea and Ariana Grande perform at the iHeartRadio Ultimate Pool Party in Miami on June 27

Brian Friedman for iHeartRadio

The four acts each boast multiple top 20 hits this week. Do they set a record? Plus, Selena & Celine's top hits and more


So … what are your favorite songs this week?

Here are a couple reader playlist samples:

Ghost @EllaHenderson, Hideaway @Kiesza, Habits @iamtovelo, I Got U @DukeDumont, All About That Bass @Meghan_Trainor

Brian Brostek ‏@BOSBrian02368

All About That Bass, Break Free, Black Widow and This Is How We Do [by Katy Perry]. Also the UK #1 hits Crazy Stupid Love [by Cheryl Cole feat. Tinie Tempah] & Ghost

Mudursun ‏@mudursun

Ah, two votes for Ella Henderson's "Ghost," a recent No. 1 in her home country of England. As noted in Billboard's Tomorrow's Hits feature in June, OneRepublic's Ryan Tedder co-wrote her debut single. Henderson competed on the British edition of The X Factor in 2012 and, following her first performance, she received quite an endorsement: "Absolutely incredible! I LOVE her!!," Tweeted Adele.

Get ready for "Ghost" to begin making the U.S. it haunt: the song goes for airplay at mainstream and adult top 40 radio next week.

And, my favorite song this week? One that's been out for more than a year, although I finally first heard it after coming back from vacation: Camera Obscura's "Break It to You Gently." While shopping for camping stoves, my brother, Michael, heard it over the in-store speakers. After making me aware of it (and others by the Scottish band) … I've become obsessed. Not only have I listened to the melodic, 10,000 Maniacs-reminiscent track probably 50 times in the past week, its video is one of the most touching pieces of art I've ever seen, as its unlikely star searches for that most basic need: companionship.

As one YouTube commenter summed up perfectly, "You know it's a good video when I find myself feeling emotional for a push cart."

(Exactly how obsessed have I become with this song? On my way in and out of Grand Central last week, I was actively looking for carts. I didn't hug any … but I did kind of want to ...)