What makes &Z by Hiroyuki Sawano notable?

The album gained significant attention within the anime music scene, particularly for its lead track, &Z, which became popular through its association with the anime series Aldnoah.Zero. Its blend of orchestral and electronic elements influenced subsequent works in the genre and helped solidify Sawano's reputation as a leading composer. When &Z was released in February 2015, Hiroyuki Sawano was already recognized for his dynamic compositions in anime soundtracks, following his acclaimed work on series like Attack on Titan. This album marked a continuation of his signature style while showcasing his experimentation with vocal tracks.