Perry was married to Brand for 14 months before parting ways in 2011. Perry is currently dating singer John Mayer.
The "Firework" star is ready with the release of her track "Grace of God", which she wrote during tough time of her marriage with Brand. It is from her latest album "Prism".
"That song is evident of how tough it really was at a certain point," Billboard magazine quoted Perry as saying.
"I asked myself, 'Do I want to endure? Should I continue living?' All the songs are real-life moments," she added.
--IANS (Posted on 30-09-2013)