Angels, in a variety of religions, are regarded as spirits. They are often depicted as messengers of God in the Hebrew and Christian Bibles and the Quran. The English word angel is derived from the Greek ἄγγελος (aggelos), a translation of מלאך (mal'akh) in the Hebrew Bible (Tanakh); a similar term, ملائكة (Malāīkah), is used in the Qur'an. The Hebrew and Greek words originally meant messenger, and depending on the context may refer either to a human messenger (possibly a prophet or priest, such as Malachi, "my messenger", but also for more mundane characters, as in the Greek superscription that the Book of Malachi was written "by the hand of his messenger" (ἀγγήλου)) or to a supernatural messenger, such as the "Mal'akh YHWH," who (depending on interpretation) is either a messenger from God, an aspect of God (such as the Logos), or God Himself as the messenger (the "theophanic angel.")

The term "angel" has also been expanded to various notions of spirits found in many other religious traditions. Other roles of angels include protecting and guiding human beings, and carrying out God's tasks.

Angelus Apatrida is a thrash metal band formed in 2000 in Albacete, Spain.

Angelus Apatrida was formed with a music style much different than what is played today. At the beginning it was a classic heavy metal music / power metal band. Two demos were recorded in this period: Lost in the Realms of Orchinodaemon (2001) and Unknown Human Being (2003). The last one was a change for the band and was recorded with a new style that led Angelus Apatrida to a post-thrash metal style.

With those demos the band started to play live shows supporting other bands like Saratoga and its popularity soon increased. It won a competition of bands and signed its first contract with the label Red Dragon and recorded the song "Danza de la Muerte" for a tribute album for the Spanish classic heavy metal band called Panzer.

The contract with Red Dragon Records was for three albums. The band recorded the first one, called Evil Unleashed in the Korsakov studios in Madrid during the summer of 2004 produced by Kosta Vázquez but it was never released due to problems with the label. Eventually, the band decided to break the contract with Red Dragon and to re-record the album one year later.

Wojciech Kilar (Polish pronunciation: [ˈvɔjt͡ɕex kilar] (pronounced phonetically: Voy-cheh Kee-lahr) ; b. 17 July 1932 in Lwów, Poland) is a Polish classical and film music composer.

Wojciech Kilar is one of Poland’s esteemed composers. Born in 1932 in Lwów (now a city in Ukraine, it was part of Poland at the time). His father was a gynecologist and his mother was a theater actress. Kilar has spent most of his life since 1948 in the city of Katowice in Southern Poland, married (from April 1966 to November 2007) to Barbara Pomianowska, a pianist. Kilar was 22 years old when he met 18 year old Barbara, his future wife.

Kilar studied at some of Poland's finest music academies, including the State Higher School of Music in Katowice, under the composer and pianist Władysława Markiewiczówna, graduating with top honors in 1955. He continued his post-graduate studies at the State Higher School of Music in Kraków from 1955 to 1958 under composer and pianist Bolesław Woytowicz. In 1957 he participated in the International New Music Summer Course in Darmstadt. Kilar expanded on his musical education in Paris in 1959-60, when a scholarship from the French government allowed him to study composition under Nadia Boulanger.