There are two artists with the name Eldritch:

1) Eldritch are an Italian progressive metal band who have been around since the early/mid 1990's. Their sound could be described as a blend of new metal with the technique and dynamics of the old-skool disciplines.
Having started out with a predominantly progressive sound - their 1998 "El Nino" release is considered essential listening to any rock/metal fan.
Not one to repeat themselves, their sound is fresh and evolves with each new release within the metal context, losing none of the heaviness.

2) Eldritch are a Japanese thrash metal band who have been around since the late 80's. They released their sole full-lenght album entitled "Blood Breed Calls My Name" in 1993. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.