I do think sometimes there's danger in guest appearance mania. I've seen too many examples that sound cool on paper like 'Oh get that guy to sing the hook on that guy's song ' and then that's all it is. It's a cool idea that sounds good on paper.
Barbara Cartland’s huge back catalogue features hundreds of historical pure romances full of dashing princes, Independent and strong heroines, sinister love rivals and exciting revelations brimming with happy endings.