This weekend on the iHeartRadio Countdown with Mario Lopez we've got some surprises in store for you! Plus Lewis Capaldi has taken back his crown as the #1 song in the land with his smash hit 'Someone You Loved'. Taylor Swift snatched the title for just one week only with her single 'You Need To Calm Down'. So we'll play some throwback classics, countdown the rest of the top 20 and much more! Tune in!
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