Retrospektive is a compilation album of old compositions by Nachtreich, a neoclassical and symphonic metal instrumental duo. The album features a harmonious blend of academic music and metal, with a focus on the former. The duo draws inspiration from the Romantic era and black metal, resulting in a unique sound that features both sensual melodies and dark metal soundscapes. The album was released in the 2000s, with most of the tracks previously unreleased. The album is a must-listen for fans of the genre.