A Sphere in the Heart of Silence is a collaborative studio album by John Frusciante and Josh Klinghoffer, released on November 23, 2004 on Record Collection. The fifth in a series of six releases Frusciante issued, from June 2004 to February 2005, the album is composed mainly of electronica-based material.

• 1 Sphere
• 2 The Afterglow
• 3 Walls
• 4 Communique
• 5 At Your Enemies
• 6 Surrogate People
• 7 My Life