Question: Both Jars of Clay and Imagine Dragons are considered what?
Context: Drummer Boy is an EP release by Christian folk group Jars of Clay featuring a new interpretation of the classic 1958 Christmas Carol "Little Drummer Boy".  The EP was originally released by Essential Records in the Christmas following the release of "Jars Of Clay" in 1995.  The EP was re-released as a two-pack with "Jars of Clay" prior to their second album, "Much Afraid". "Demons" is a song by American rock band Imagine Dragons.  It was written by Imagine Dragons and Alex da Kid, and produced by Alex da Kid.  The song appears on their major-label debut extended play "Continued Silence" and also makes an appearance on their debut studio album "Night Visions" as the fourth track.  "Demons" was solicited to American triple-A radio stations on January 28, 2013 and to modern rock stations on April 1 and serves as the album's overall fifth single and was released as the third single from "Night Visions" in the United States, and was later released to contemporary hit radio stations on 17 September 2013 as an official single.  The lyrics portray the protagonist warning the significant other of his or her flaws. The American rock band Imagine Dragons has released three studio albums, four live albums, eight extended plays, seventeen singles, two promotional singles and twelve music videos.  The band released their self-titled debut extended play in September 2009; "Hell and Silence" and "It's Time" followed in June 2010 and 2011 respectively.  Imagine Dragons later found commercial success with the release of their fourth extended play, "Continued Silence", in February 2012. " It's Time" was released as the lead single from the EP, peaking at number fifteen on the United States "Billboard" Hot 100.  It has since sold over 3 million copies in the United States.  "Continued Silence" went on to peak at number 40 on the "Billboard" 200 in the United States. Jars of Clay is a Christian rock band from Nashville, Tennessee.  They met at Greenville College in Greenville, Illinois. Imagine Dragons is an EP by American rock band Imagine Dragons, released in 2009 in the United States.  It was recorded at Battle Born Studios.  All songs were written by Imagine Dragons and self-produced.  Engineering was by Robert Root.  Tracks from the EP featured on Windows Media Player after the band won a competition on Reverbnation.  "I Need a Minute" was featured on hit predictor CrazedHits.com. Hell and Silence is the second extended play (EP) by American rock band Imagine Dragons, released on June 1, 2010.  It was recorded at Battle Born Studios.  All songs were written by Imagine Dragons and self-produced; the EP was in part mixed by Grammy nominated engineer Mark Needham.  Most of the songs on this EP were remastered and included on the "Continued Silence EP" and/or "Night Visions", excluding "All Eyes" and "Emma". Live at Independent Records is the debut live album by American rock band Imagine Dragons, released on April 20, 2013 through Interscope Records.  The album, produced by Alex da Kid, was recorded at Independent Records in Denver, Colorado during an in-store performance on the night of August 31, 2012 in promotion of the then-upcoming debut studio album "Night Visions".  The album consists of acoustic versions of Imagine Dragons' first three singles and was released on Record Store Day as one of the event's many exclusive releases. Continued Silence EP is the fourth EP by American rock band Imagine Dragons, released on February 14, 2012 by KIDinaKORNER and Interscope Records.  It was recorded at Westlake Recording Studios.  All songs were written by Imagine Dragons and produced by Grammy Award-winning producer Alex Da Kid, with mixing by Grammy-winning engineer Manny Marroquin and engineer Rich Costey.  The EP was mastered by Grammy-winning mastering engineer Joe LaPorta.  All of the songs on "Continued Silence" were featured on the band's debut album "Night Visions" except for "My Fault" and "Round and Round", which were later included on deluxe editions of "Night Visions".  Previous purchases of songs from the EP counted towards "Night Visions" and decreased its price. It's Time is an EP by American rock band Imagine Dragons, released on March 12, 2011.  It was recorded inside of Studio X at the Palms Hotel and Casino during the autumn of 2010.  All songs were written by Imagine Dragons and mixed by Grammy-nominated engineer Mark Needham. Imagine Dragons is an American rock band from Las Vegas, Nevada, consisting of lead vocalist Dan Reynolds, lead guitarist Wayne Sermon, bassist and keyboardist Ben McKee, and drummer Daniel Platzman.  The band first gained exposure in 2012 with the releases of their debut studio album "Night Visions" and its first single "It's Time". " Billboard" placed them at the top of their "Year In Rock" rankings for 2013, and named them their "Breakthrough Band of 2013". " Rolling Stone" named their single "Radioactive" from "Night Visions" the "biggest rock hit of the year", and MTV called them "the year's biggest breakout band".  "Night Visions" peaked at number two on the weekly US "Billboard" 200 chart and the UK Albums Chart.  The band's second studio album "Smoke + Mirrors" was released in 2015, and reached number one in the US, Canada and the UK.  After touring for their sophomore record, the band took a brief hiatus to focus on their personal lives.  During the latter half of 2016, they began recording their third studio album, "Evolve", released in 2017.  While all three albums were commercially successful, critical reception was mixed.
Answer: rock band