1. Roar (August 2013 - November 2013)
2. Unconditionally (November 2013 - February 2014)
3. Double Rainbow (February 2014 - May 2014)
4. Dark Horse (May 2014 - September 2014)
5. This Is How We Do (September 2014 - December 2014)
6. Ghost (December 2014 - March 2015)
7. Walking On Air (March 2015 - June 2015)
How about we hear the songs first? Plus, all the critics are saying This Is How We Do is a summer song.
6. A “self-sabotaging” fourth album is on the way... Perhaps we'll get the answer to the great unknowns of Perry's life with her next release, which she joked was bound to be a "self-sabotaging" acoustic record. "Are you ready, Steve?" she goaded of Capitol's CEO.
Goodness they're really taking a risk through sending both promo singles to radio (I assume WOA will be sent too if DH is). Might affect Roar and cause some overexposure. Either way, they should wait a while before releasing the second single.
If it gets sent to Radio then we might as well call Dark Horse single 2 and Walking on Air single 3, Radio Play + Sales is what makes a single a single. They'll get lyric videos too for streaming.