Beyoncé credited both her husband—rapper Shawn Carter (Jay-Z) —and jazz singer Etta James for inspiring her to push the limits of her songwriting and artistry. Musically, I Am... drew inspiration from folk and alternative rock, while blending acoustic guitar elements into contemporary ballads, and its tracks were written and produced by Beyoncé, during collaborative efforts with Babyface, Tricky Stewart, The-Dream and Ryan Tedder. Sasha Fierce boasted production from Darkchild and Sean Garrett.