Question: We as Human, was a Christian rock band, played a show with which band, sometimes abbreviated as A7X?
Context: Salvation Air Force is known as Canada's first Christian rock band.  It was formed in 1972 by Donnie Gossett and later joined by his brother, Michael Leon Gossett.  The band toured across Western Canada and the Western United States and recorded four albums.  The first was released on the then largest Christian record label, Myrrh Records, and the subsequent three were independent releases.  The band was signed by the "Father of Christian Rock" Larry Norman for his Solid Rock Records label in 1977, who produced a version of his own composition, "If God Is My Father" with SAF.  However, the band's first album presented a mellow version of their music, which led to the group disbanding in 1980.  The band briefly reformed in 2004–2006 for a few concerts and two more albums. Mind Garage-Early Years (A Total Electric Happening) was recorded by the Mind Garage, the first hard rock band recognized nationally as a Christian Rock band when America tuned into a Christian rock worship service in 1969 on ABC TV.  The song, "Water" was used in the service.  The term "Christian rock" had not yet been coined in 1968 and these compositions can be considered the missing link between secular and Christian rock music. Southbound Fearing are an American Christian rock band, who primarily plays Christian alternative rock with rock and roll.  They come from Toledo, Ohio.  The band started making music in 2006, and their lead vocalist is Brady Leonard.  They have released three studio albums and two extended plays, with Red Cord Records.  The group have charted eight songs on the "Billboard" magazine Christian rock songs chart. "Awake and Alive" is the third single of the 2009 album Awake by the Christian rock band Skillet.  It was released on February 15, 2010 to Christian Hard rock and Rock radio.  Before release as a single, the song charted at No. 100 in the "Billboard" Hot 100 for one week and No. 16 on the "Billboard" Top Heatseekers after the release of Awake thanks to digital sales, becoming Skillet's first song to hit the Hot 100.  The song also charted at No. 1 on Christian Rock.net.  It has also debuted on Christian Rock charts at No. 12. We as Human was a Christian rock band from Sandpoint, Idaho formed in 2006.  They were discovered by John Cooper, lead singer of the band Skillet, in 2010 who introduced them to Atlantic Records, their current label.  They moved to Nashville, Tennessee in September 2011, where they resided until they disbanded.  They have played shows with big names such as Avenged Sevenfold, Skillet, Korn, Alter Bridge, Papa Roach, and Shinedown.  Their music has been accepted in both the Christian and mainstream rock markets. Joel Hanson was the lead singer and guitarist for Christian rock band PFR.  After the breakup of the band, he went on to a solo career with the albums "Captured", "Broken" and "What If It Is".  Joel is a songwriter who has collaborated with several artists across the music industry, including Sara Groves, Geoff Moore, and Phil Keaggy.  Joel is currently performing with The Joel Hanson Band.  His brother Jade was the lead singer for the Christian rock band Believable Picnic. Nevertheless, often abbreviated as NTL, was a Christian power pop band from Chattanooga, Tennessee.  Their song, "Live Like We're Alive", reached the top 5 of the R&R Christian Rock Chart.  Their song "The Real," was played on contemporary Christian music radio stations, peaking in the Top 10 on radio stations throughout the United States.  The band has toured with many other contemporaries from the Christian rock scene, including The Click Five, The All American Rejects, The Downtown Fiction, Hawk Nelson, The Classic Crime, Anberlin, Parachute and Lifehouse. Mind Garage was an American psychedelic rock and roll band from Morgantown, West Virginia, and a progenitor of Christian rock music.  Their "Electric Liturgy" performed in 1968 was the first documented Christian rock worship service, and their 1969 eponymous debut RCA album was one of the earliest Christian rock albums released. Avenged Sevenfold (sometimes abbreviated as A7X) is an American heavy metal band from Huntington Beach, California, formed in 1999.  The band's current lineup consists of lead vocalist M. Shadows, rhythm guitarist and backing vocalist Zacky Vengeance, lead guitarist and backing vocalist Synyster Gates, bassist and backing vocalist Johnny Christ, and drummer Brooks Wackerman. "Christian Rock Hard" is the ninth episode of the seventh season and the 105th overall episode of the American animated series "South Park".  It originally aired on Comedy Central in the United States on October 29, 2003.  In the episode, the kids start a rock band, but concerned with the fact that people will potentially download their music from the Internet illegally, they refuse to play.  Meanwhile, Cartman starts his own Christian rock band.  The episode satirizes famous artists who have spoken out against copyright infringement, such as Metallica, and also serves as a commentary on how most musicians do what they do mainly for profit gains.  Christian rock music is also parodied as being identical to love songs, except for referencing Jesus in their lyrics.
Answer: Avenged Sevenfold