Wikipedia
W.F.O. (Wide Fucking Open) is the seventh full-length album by thrash metal band Overkill, released in July 15, 1994 on Atlantic Records. The album contains "hidden songs" on tracks 97 and 98, featuring the band warming up in the studio, playing " Heaven and Hell" by Black Sabbath, "The Ripper" by Judas Priest and " Voodoo Child (Slight Return)" by Jimi Hendrix. The instrumental song "R.I.P. (Undone)" was written as a tribute to Criss Oliva, co-founder of the band Savatage, who died nine months before the release of the album.
W.F.O. is the last Overkill album released by Atlantic Records, who released their previous five albums, and their last album with guitarists Rob Cannavino and Merritt Gant. W.F.O. and I Hear Black were re-released on Wounded Bird Records in 2005.