Question: The Complex Rock Tour Live DVD by Blue Man Group features a cover of a song by The Who that was released in what year?
Context: Last Train to Trancentral is a digital EP by Blue Man Group, released on October 31, 2006 through the iTunes Store.  The EP features a cover of the KLF song "Last Train to Trancentral", which is played during the paper finale at Blue Man Group's theatrical shows (except in London and Berlin where a remixed cover version of "I Feel Love" is played).  The other tracks include one live song originally from the album, "Audio" ("PVC IV"), and two previously unreleased tracks.  The track "Marshmallows & Gumballs" is from a theatrical skit where a Blue Man tosses marshmallows into another Blue Man's mouth, and the third Blue Man puts "gumballs" filled with paint in his mouth, and squirts the paint on a spinning canvas, creating spinart.  The "Wands" song is a short that is played during the Venetian show. The Complex is the second full-length album by Blue Man Group, released in 2003.  The album produced two singles, and debuted at #60 on the Billboard charts.  The Allmusic review by Robert L. Doerschuk states "Although its inspirations, musical and conceptual, trace as far back as Kraftwerk, "The Complex" serves as a reminder that modern devices and glistening production values can be applied to the most primal creative instincts, if utilized by the right -- blue -- hands". The Complex Rock Tour Live is a live DVD by Blue Man Group in support of their album, "The Complex" with footage from their shows in Dallas.  It features almost all of the songs from that album, one song ("Drumbone") from their older album, "Audio", and a cover of The Who song "Baba O'Riley".  The DVD also has three music videos on it: "Sing Along", "The Current", and "Exhibit 13".  Side B of the album has three tracks from "The Complex" in 5.1 surround sound, "Above", "Your Attention", and "Sing Along". "Baba O'Riley" is a song by the English rock band The Who.  It is the opening track to the band's studio album "Who's Next", and was issued in Europe as a single on 23 October 1971, coupled with "My Wife".  It also features as the theme song for CSI: New York. Bee (2003) is an EP released by Tracy Bonham.  The EP was recorded after performing on Blue Man Group's album "The Complex" and was only available to her fans while on tour.  In 2005, "Bee" was re-issued as a CD/DVD in Europe titled "Something Beautiful". Live at The Venetian – Las Vegas is a digital album by Blue Man Group, released through the iTunes Store on July 25, 2006.  The 10-track album is a compilation of various live recordings of the group's performances at The Venetian Resort Hotel Casino's "Blue Man Theater" on the Las Vegas Strip in Paradise, Nevada, where the group has been performing since October 2005.  The album features seven songs, albeit different arrangements, from their debut album, "Audio", and one song from their second album, "The Complex" ("Time to Start").  The two other tracks on the album, "Feast Picking" and "Chant Jam," are the live arrangements/combinations of past pieces in the show.  A series of Blue Man Group podcasts were also released through the iTunes Store to promote both the album and the show itself. Blue Man Group Theatre (also known as Blue Man Group at Universal Orlando, or simply Blue Man Group) is an attraction located at Universal Orlando Resort.  The attraction, featuring a unique Blue Man Group performance, opened June 6, 2007 in the former Nickelodeon Studios building, that is now part of Universal CityWalk Orlando.  Along with Blue Man Group, the remainder of the former Nickelodeon Studios building is currently occupied by FSN Florida and Sun Sports for their television production needs. Rods and Cones is a live digital single by Blue Man Group, released on the iTunes Store on July 11, 2006.  An instrumental version of the song was originally released on the group's debut album, "Audio", however the single, which can also be found on Blue Man Group's album "Live at The Venetian – Las Vegas", is the version performed at their venue shows and is one of the group's most popular live pieces.  The song is mostly instrumental, except for a voice over about the rod and cone photoreceptors of the human eye.  A video of the song's live performance has also been released on iTunes, which marks the first time that a Blue Man Group theatrical performance has been released to the public. The Dixie Chicks - Top of the World Tour Live DVD was released by the Dixie Chicks on November 21, 2003.  It is a concert video that documents performances from the group's 2003 Top of the World Tour.  On December 16, 2003 Top of the World Tour: Live (DVD) was certified Platinum by the Recording Industry Association of America. The following is a list of CDs and DVDs by Blue Man Group.  It includes all Blue Man Group limited editions and out-of-print releases.
Answer: 1971