I would do this for singles, personally:
1st (December 2013-March 2014) Pretty Hurts POP
2nd (December 2013-March 2014) Drunk in Love (featuring JAY Z) URBAN/RHYTHMIC
3rd (April-August 2014) XO (all formats) - a lot of time to cement it as a signature hit
4th (September-December 2014) Blow POP
5th (September-December 2014) Mine (featuring Drake) URBAN/RHYTHMIC
6th (January-April 2015) Partition URBAN/RHYTHMIC
