Katy Perry is said to be using the recent split with husband Russell Brand as inspiration for her new album.
The actor and comedian filed for divorce on Friday (December 30), blaming ''irreconcilable differences' on the split.
A source told The Sun: "Ever since problems started to emerge, she penned her thoughts in a diary which she goes back to to draw upon for lyrics for her songs.
"She has always said that writing is almost a form of therapy for her and she would often be found in her dressing room on tour writing in her diary.
"She spent a lot of time in Hawaii over Christmas writing lyrics to two of her latest tracks." Russell filed for divorce at LA Superior Court last Friday, citing "irreconcilable differences".
Katy Perry is believed to have wrote about former boyfriend Travis McCoy's alleged drug abuse in her album track, 'Circle The Drain'.
Lyrics in the track include: "Thought I was the exception/ I could rewrite your addiction/ You could have been the greatest/ But you'd rather get wasted/ You fall asleep during foreplay/ 'Cause the pills you take are more your forte."
Perry and Brand began dating shortly after the MTV Video Music Awards in September 2009, which the comedian hosted.
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