Opeth（月之城）是一支来自于瑞典斯德哥尔摩的前卫死亡金属乐队，其成立于1990年，乐队主唱、吉他手Mikael Åkerfeldt（米克尔·阿克菲尔德）乃乐队灵魂人物，同时也为乐曲、歌词主要创作填写者。

Opeth音乐特点为乐风多样，元素众多，融入了包括重金属，死亡金属，前卫金属，爵士，蓝调，民谣等不同音乐风格， 一般一首歌曲长度为10分钟。不同于传统死亡金属乐队，Mikael在歌唱时同时运用了死腔和清嗓，而在乐曲中也同时运用了残酷激烈的电吉他和优美舒缓的木吉他。

而Opeth在2005年与唱片公司Roadrunner Records签约。

Opeth is a Swedish heavy metal band from Stockholm, formed in 1990. Though the group has been through several personnel changes, singer, guitarist, and songwriter Mikael Åkerfeldt has remained Opeth's only founding member and primary driving force throughout the years. Opeth has consistently incorporated progressive, folk, blues, classical and jazz influences into their usually lengthy compositions, as well as strong influences from death metal, especially in their early works. Many songs include acoustic guitar passages and strong dynamic shifts, as well as both death growls and clean vocals. Opeth rarely made live appearances supporting their first four albums; but since conducting their first world tour after the 2001 release of Blackwater Park, they have led several major world tours.