Question: Bat Country peaked at #20 on the list of which hard rock and heavy metal magazine's Top 21st Century Hard Rock Songs?

Context paragraphs:
Bat Country: "Bat Country" is a song by Avenged Sevenfold.  The song was released in August 2005 as the second single from their third album, "City of Evil".  Avenged Sevenfold won 'Best New Artist Video' at the 2006 MTV Video Music Awards for "Bat Country" and on October 1, 2009, the single was certified gold by the RIAA.  For these reasons, "Bat Country" is often believed to be the band's most commercially successful song.  The song was peaked at number 20 on Loudwire's Top 21st Century Hard Rock Songs.  It also was rated as number 9 on Ultimate Guitar's list of Top 25 Best Songs With Guitar Duels.

Ozzfest: Ozzfest is an annual festival tour of the United States and sometimes Europe (and for the first time Japan in 2013) featuring performances by many heavy metal and hard rock musical groups.  It was founded by Ozzy Osbourne and his wife Sharon Osbourne, both of whom also organise each yearly tour with their son Jack Osbourne.  The Ozzfest tour has featured bands of a variety of genres within heavy metal and hard rock, including alternative metal, thrash metal, industrial metal, metalcore, hardcore punk, deathcore, nu metal, death metal, post-hardcore, gothic metal and black metal.  Ozzy Osbourne and Black Sabbath have played the tour several times over the years.

Rock Hard (magazine): Rock Hard (also RockHard) is a German music magazine published in Dortmund, Germany, with other language editions in various countries worldwide, including France, Spain, Brazil/Portugal, Italy and Greece.  The magazine contains reports, interviews, specials, reviews, news and all other content regarding hard rock and heavy metal music.  Next to the German edition of "Metal Hammer" it is the leading magazine for metal and hard rock in Germany.  German news magazine "Der Spiegel" called it the "Zentralorgan" ("Central organ") of the heavy metal fans in Germany, others dubbed it a "Kultzeitschrift" ("cult magazine").  Founded by Holger Stratmann, it has published in Germany more than 300 issues since 1983 and since 1989 has become monthly.  "Rock Hard" magazine is independent from major media companies.  Its slogan is "critical, competent, independent".  Since 1990, the magazine employees have been also organizing the Rock Hard Festival, which is held annually in Gelsenkirchen since 2003 - on the Pentecost weekend.  The festival is streamed by news magazine "Spiegel Online", the internet edition of "Der Spiegel", and by "WDR" television under the "Rockpalast" label.

Joe In The Future: Joe In The Future is an ongoing short story comic strip that appears in "Heavy Metal Magazine".  The strip is co-written by Horatio Weisfeld and Peter Koch.  The first installment of the series appeared in the January 2002 issue of Heavy Metal Magazine.  The most recent appeared in the September 2010 issue.  Heavy Metal began running Joe In The Future as a print series in 2001 after the initial episode appeared as 3-minute internet flash web animation and Heavy Metal editor Howard Jorofsky suggested Weisfeld allow the magazine to run additional episodes as a print and Weisfeld then followed with several additional Joe in the Future installments for Heavy Metal.  The nearly simultaneous appearance of Joe in the Future as both web-animation and print episodes makes the series an early example of web-initiated Transmedia storytelling.

Like a Storm: Like a Storm is a hard rock band from Auckland, New Zealand, best known for combining heavy baritone guitar riffs and hard rock songs with didgeridoo.  Formed by Chris, Kent, and Matt Brooks, Like a Storm have shared American & European stages with Alter Bridge, Korn, Shinedown, Black Veil Brides, Creed, Puddle of Mudd, Staind, Sick Puppies, and many others, as well as touring North America extensively as a headline act.  Like a Storm are the highest charting New Zealand hard rock band in American radio history .  Both of Like a Storm's two studio albums, "The End of the Beginning" and "Awaken the Fire", debuted in the Billboard 200.  The band has toured with Alter Bridge, Black Stone Cherry, Three Days Grace, Steel Panther, Shinedown and Hellyeah.

Loudwire: Loudwire is an online magazine that covers hard rock and heavy metal music.  It is owned by media and entertainment business Townsquare Media.  Since its launch in August 2011, "Loudwire" has secured exclusive interviews with Ozzy Osbourne, Metallica, Judas Priest, Guns N' Roses, Megadeth, Mötley Crüe, Suicidal Tendencies and many others.  "Loudwire" has also exclusively premiered new material from Judas Priest, Anthrax, Jane's Addiction, Stone Sour, Phil Anselmo and many more of rock and metal's biggest acts.

UFO discography: The following is a comprehensive discography of UFO, an English hard rock band formed in 1969.  The band became a transitional band between early hard rock and heavy metal and the new wave of British heavy metal.  UFO's influence was strongly felt in the 1980s heavy metal scene and they have been cited as a primary influence of Steve Harris of Iron Maiden, Kirk Hammett of Metallica, Dave Mustaine of Megadeth, Joey Tempest of Europe, Frank Hannon of Tesla, and Mike McCready of Pearl Jam, among others.

Revolver (magazine): Revolver is a bi-monthly rock and heavy metal magazine published by NewBay Media.  Before covering heavy metal, rock & hard rock solely, it was a more mainstream oriented magazine.  The magazine is structured in a manners similar to publications such as "Spin" while covering many avenues within the heavy metal and punk subcultures.  It features cover stories (usually centering on a band's new release or upcoming tour), album reviews, instrument reviews, bulletins, and a celebrity advice column featuring letters to Vinnie Paul, former drummer for Pantera and Damageplan, and current member of hard rock supergroup Hellyeah.  Vinnie took a hiatus from the column following the death of his brother, Dimebag Darrell (he was supposed to be replaced by Slipknot member Joey Jordison, who decided not to do it when Jordison found out he was replacing Paul) but returned to offer advice to readers about music, life, sex and other topics.  The column has recently included Lzzy Hale from Halestorm fielding questions.

Chop Suey! (song): "Chop Suey!"  is the first single from Armenian-American alternative metal band System of a Down's second album "Toxicity".  The single was released in August 2001 and earned the band its first Grammy nomination in 2002 for Best Metal Performance.  Loudwire included the song in its list of "The Best Hard Rock Songs Of The 21st Century", where it was ranked at number-one.  "Chop Suey!"  is often seen as the band's signature song.

Run to the Hills: "Run to the Hills" is a song by the English heavy metal band Iron Maiden.  It was released as their sixth single and the first from the band's third studio album, "The Number of the Beast" (1982).  Credited solely to the band's bassist, Steve Harris, although significant contributions were made by lead vocalist Bruce Dickinson, it remains one of their most popular songs, with VH1 ranking it No. 27 on their list of the 40 Greatest Metal Songs and No. 14 on their list of the Greatest Hard Rock Songs.

Supporting paragraphs: Bat Country Loudwire
Answer: Loudwire