Nirvana's SILVER: THE BEST OF THE BOX features favorites from WITH THE LIGHTS OUT plus three previously unreleased tracks. Sliver - The Best of the Box is an album the group grunge US Nirvana , published in 2005 . This is a selection of the best recordings appeared on the previous box With the Lights Out ; within Sliver found space three unreleased tracks: Spank Thru from the demo of 1985 Fecal Matter , Sappy of 1990 , recorded in Seattle and produced by Jack Endino , Come as You Are recorded during the tests performed before Nevermind and present in demo Boombox. Among the tracks are also present the cover of Heartbreaker of Led Zeppelin , the song Old Age (not returned in the official ladder of Nevermind ) and a demo version of All Apologies recorded by Kurt Cobain to his house.