The #1 R&B song on March 29, 2015

FourFiveSeconds By Rihanna featuring Kanye West & Paul McCartney

Other #1 songs on March 29, 2015

#1 Hit Song

Uptown Funk
Mark Ronson featuring Bruno Mars

UK #1 Song

Hold My Hand
Jess Glynne

#1 Country Song

Take Your Time
Sam Hunt

#1 Alternative Hit

Lampshades on Fire
Modest Mouse

#1 Dance Track

Elastic Heart
Sia