The 'Impossible' singer also said that he and 35-year-old Scherzinger have remained good friends following the 2012 series finale, reported Ace Showbiz.
"I talk to Nicole every day. People don't believe me when I say that, but we're very close. We're going to make some music together, and will have something out in the future," Arthur said.
"We were doing a dubstep tune the last time we were together. I was doing a bit of rapping, she was doing a bit of singing. It's fun working with Nicole, there's no boundaries with her, she just wants to make good music," he added.