Question: What is the theme of the album "Horror Show" by Iced Earth?

Context paragraphs:
The Crucible of Man: Something Wicked Part 2: The Crucible of Man: Something Wicked Part 2 is the ninth studio album by American heavy metal band Iced Earth.  Released in September 2008, it was the first Iced Earth album since 2001's "Horror Show" to feature singer Matt Barlow.  "The Crucible of Man" is the second concept album based on guitarist-songwriter Jon Schaffer's Something Wicked Saga.  It also the third album overall to feature the subject.

Iced Earth discography: The discography of Iced Earth, an American heavy metal band, consists of twelve studio releases, two live albums, three compilations, five singles, three videos, and ten music videos. Originally formed as Purgatory by guitarist Jon Schaffer on January 20, 1985, the band spent five years playing live locally and went through several line-up changes.  After changing their name to Iced Earth, the band recorded the demo "Enter the Realm" (1989), which landed them a deal with the German label, Century Media Records.  One year later, the band recorded their self-titled album "Iced Earth", followed by 1991's "Night of the Stormrider", which peaked at number 60 on the Japanese Oricon charts.  Three years later, Iced Earth released "Burnt Offerings", featuring new vocalist Matthew Barlow, followed by "The Dark Saga" (1996).

Iced Earth: Iced Earth is an American heavy metal band from Tampa, Florida.  It was formed in 1985 under the name Purgatory by guitarist and main songwriter Jon Schaffer and original drummer Greg Seymour.  Iced Earth released their debut album in 1990 and have since released eleven studio albums, four EPs, three compilations, three box sets, three live albums and one cover album.

Iced Earth (album): Iced Earth is the eponymous debut studio album by American heavy metal band Iced Earth.  It was released in November 1990 internationally and February 1991 in North America.  The album has three different covers (a European/Japanese cover, an American cover and a remastered cover).  This album was Mike McGill's only album with Iced Earth, as well as the last for singer Gene Adam.

Dark Genesis: Dark Genesis is a five-disc box set by American heavy metal band Iced Earth, released on November 27, 2001.  It contains remastered versions of their first three studio albums ("Iced Earth", "Night of the Stormrider" and "Burnt Offerings"), their rare demo "Enter the Realm", and a newly recorded tribute CD, "Tribute to the Gods", which contains covers of many songs that have influenced Iced Earth.  "The Tribute to the Gods" CD was the last Iced Earth release to feature lead guitarist Larry Tarnowski, and the last to feature Matt Barlow until his 2007 return.  As well, that same disc marked bassist James MacDonough's first Iced Earth disc since 1999, as he had been absent during the recording of "Horror Show".

Horror Show (album): Horror Show is the sixth studio album from the American heavy metal band Iced Earth, released June 26, 2001.  It is a theme album based on classic monsters and horror-movie icons, including Dracula, Frankenstein, and the ghost from Phantom of the Opera.  It was the first Iced Earth album to feature drummer Richard Christy, and the only album to feature Steve DiGiorgio on bass, though he did not tour with the band.  "Horror Show" is usually considered Iced Earth's only straightforward power metal release, as little of the thrash metal influence from the band's earlier works is present.  This album also featured more prominent usage of Matt Barlow's multi-layered vocals as a center point for the songs.

Demons and Wizards (band): Demons and Wizards is a power metal band conceived as a side-project by vocalist for Blind Guardian, Hansi Kürsch, and the guitarist for Iced Earth, Jon Schaffer.  Schaffer writes the music and Kürsch writes the lyrics.  The band's line-up during the recording of their first album in 1999 also featured Mark Prator, who was the drummer on a few Iced Earth albums, and Jim Morris doing most of the guitar solos, Morris also having worked with Iced Earth in the past.

The Blessed and the Damned: The Blessed and the Damned is a double CD best of compilation album by the American heavy metal band Iced Earth.  The CD-booklet can be reversed, to show either angels or demons on the cover.  The booklet also includes Jon Schaffer's comments on previous albums and his life.  Even though the CD was released after "The Glorious Burden", the biography in the booklet makes no mention of it.  This is probably because Iced Earth left their record label Century Media Records prior to "The Glorious Burden", and signed with SPV.  In turn, Century Media released this compilation album.

Gene Adam: Gene Adam was the original singer of Iced Earth/Purgatory.  Adam joined Purgatory in 1985 and performed many shows with them, as well as recording several demo tapes.  In 1988, the band changed their name to Iced Earth and added Randall Shawver as a second guitarist.  Adam wrote the lyrics to "Written On The Walls", the only Iced Earth song he is noted as co-writing.  The band began working on demos in 1988 and released their first official demo tape "Enter The Realm" in 1989, followed by the self-titled Iced Earth album in 1990.  Gene continued to perform many shows with the band, notably touring Germany in early 1991 as support for Blind Guardian.

Alive in Athens: Alive in Athens is a live album by American heavy metal band Iced Earth.  It was recorded on the nights of January 23 and January 24, 1999 in front of sold out crowds of approximately 2000 people (on both nights) at the Rodon Club in Athens, Greece.  Iced Earth was supporting the "Something Wicked This Way Comes" album and were on tour.  It was turned into a single DVD, and released in October 2006.  The album features the return of former drummer Brent Smedley, who did not record on the band's previous album.

Supporting paragraphs: Horror Show (album) Iced Earth
Answer: classic monsters and horror-movie icons