Tenebrae in Perpetuum is an Italian Black Metal band. TIP was founded in Imèr di Primiero (Trentino Alto-Adige) by Atratus, real name Francesco Marinello (vocals, drums, guitars) and The Darkest Abyss (bass). With this line-up they released a self-titled EP, a demo and their first album, "Onori Funebri Rituali". Then The Darkest Abyss left the band, and was replaced by drummer Vidharr. With this new line-up TIP released a split with Horna and a second full-length album, "Antico Misticismo".