Question: Who were the writers for each of the top 5 year-end Billboard pop songs in 2014 by popularity?
Categories: Music
Culture
Relevant Wikipedia pages:
title: Billboard Year-End Hot 100 singles of 2014
title: Happy (Pharrell Williams song)
title: Dark Horse (Katy Perry song)
title: All of Me (John Legend song)
title: Gina Raimondo
title: Counting Stars