Curtains is the ninth solo album by John Frusciante, released on February 1, 2005 on Record Collection. The album is primarily an acoustic album, in contrast to his previous collaboration with Josh Klinghoffer, A Sphere in the Heart of Silence, which was mostly electronic. According to Frusciante, the album was recorded in his living room: "It was just me sitting on a pillow, on my living room floor, with my back leaning against the couch."
The album features contributions from Autolux drummer Carla Azar, upright bassist Ken Wild, and The Mars Volta guitarist Omar Rodríguez-López, with Frusciante noting, "Carla from the band Autolux plays drums. I loved having a feminine energy. My friend Omar Rodriguez-Lopez of the Mars Volta played some guitar. He and I do these solos together where we're using the same amp at the same time."