Slave of Satan is a single

Single (music)

In music, a single or record single is a type of release, typically a recording of fewer tracks than an LP or a CD. This can be released for sale to the public in a variety of different formats. In most cases, the single is a song that is released separately from an album, but it can still appear...

 by Finnish

Finland

Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

 doom metal

Doom metal

Doom metal is an extreme form of heavy metal music that typically uses slower tempos, low-tuned guitars and a much "thicker" or "heavier" sound than other metal genres...

 band Reverend Bizarre

Reverend Bizarre

Reverend Bizarre was a doom metal band from Finland. They played slow and heavy traditional doom with dramatic vocals, following in the footsteps of bands such as Saint Vitus, Pentagram and Black Sabbath....

. It was released in April 2005. The sole track, "Slave of Satan" appears here unabridged (featuring an intro and outro with a "Recitation of the Black Liturgy" by Daniel Nyman of Oak) as it was later released in edited form (13:26) on the band's second LP

II Crush the Insects

II: Crush the Insects is the second album by the Finnish doom metal band Reverend Bizarre. The song "Slave of Satan" appears here in a 13:27 version, which is an abridgement compared to the full version of the song released as a CD single which clocked at 20:59...

. The single was edited to the exact length of 20:59 to fit the total length limitations set for the Finnish single charts. The release hit the Finnish single charts at #2, staying on the charts for five weeks.