Technical Difficulties is the third studio album by heavy metal band Racer X, released on December 8, 1999[1] through Mercury Records (Japan),[2] and on April 25, 2000 through Shrapnel Records (United States)[3] and Mascot Records (Europe).[4] The album's title track evolved from the introductory song "Metal Dog" on guitarist Paul Gilbert's 1995 instructional video Terrifying Guitar Trip; it later appeared in the 2009 video game Brütal Legend, and was covered by cellist duo 2Cellos on their 2012 album In2ition, for which they also shot a promotional video.[5] "B.R.O." stands for "Bach Rip-Off", a homage to a previous track, "Y.R.O." (Yngwie Rip-Off"), from the band's 1986 debut album Street Lethal.