Sia Furler chatted online with fans at Gigwise.com last week, where she talked about writing with Christina Aguilera on her ‘Back To Basics’ follow-up. “Xtina and I completed 4 songs together with my mate and co-writer Sam Dixon,” Furler said. “We will be credited as co-writers, and I guess I did some vocal production and Sam did the other production. I call her the Mad Scientist because she is the most technically brilliant singer I’ve ever met. She scrambled my mind.” Read more.