Shadows Collide with People is the fourth studio album by American musician John Frusciante, released February 24, 2004. The album was written during the recording of By the Way (2002) by Frusciante's group Red Hot Chili Peppers and is widely regarded as his most accessible work, featuring a mix of guitar-driven alternative rock, folk ballads, and electronica. Frusciante has stated that this was his most expensive solo album to date, costing around $150,000 to produce, a significant departure from his earlier albums, which had been low-budget and recorded at his home. Frusciante noted, "I was sick and tired of people dismissing my records as being fucked-up and unprofessional."

Charles Alexander Clouser is an American keyboardist, composer, record producer, and remixer. He worked with Trent Reznor for Nine Inch Nails from 1994 to 2000, and is a composer for film and television; among his credits are the score for the Saw franchise and American Horror Story. Clouser was nominated for two Grammy Awards for Best Metal Performance in 1997.