Who mastered the song " It will Rain " by Ari Levine , Bruno Mars , and Philip Lawrence ?
Personnel Vocals by Bruno Mars Songwriting – Bruno Mars , Philip Lawrence , Ari Levine , K'naan Production – The Smeezingtons Engineering – Ari Levine Scratching – DJ Dizzy Mixing – Manny Marroquin * Assistants – Erik Madrid , Christian Plata Mastering – Stephen Marcussen Instrumentation – Bruno Mars , Ari Levine Credits and personnel .