Angel Witch
Skeletonwitch
Hellwitch
That would be Instrumental Music. Many bands and genres are instrumental, such as classical and some jazz music, along with bands such as Liquid Tension Experiment or Mono, which are Progressive Rock. Many Progressive Rock bands are instrumental, if you are looking for a rock band that has no vocals.
witches
Yes, several bands have the word "system" in their name. Notable examples include System of a Down, a popular metal band known for their unique sound and political lyrics, and System 7, an electronic music group. There are also smaller or less mainstream bands with "system" in their names across various genres.
Salem is from a Hebrew word meaning peace.
A group of witches is a coven.
Soundgarden Sounds of Sunshine Sounds Orchestral
The plural form is witches.
songwriter is the name for this
Compilations are works created by assembling previously separate works. These albums are all compilations of holiday music by various bands.
Composing is another word for writing music.
Psychill is another word given to music of the genre psybient or psychedelic ambient music. The word psychill itself coming from a combination of the two words psychedelic and ambient. Popular bands with the genre include Shpongle, Aes Dana, Entheogenic, Sulman, Younger Brother, Carbon Based Lifeforms, Bluetech and Androcell to name just a few. The music itself relies heavily on computer generated sounds and effects processing with heavy production values.
The wickedness is shown by witches.