Zetsuen no Tempest OST - Encounter
The anime Zetsuen no Tempest contains lots of Hamlet references and citations from holy books.
In addition, its producer studio is also known for Eureka Seven and Full metal Alchemist which are highly popular amongst anime fans. The events in the anime begin with the death of Aika with whom two best friends are in love and decide to revenge for her death and find themselves in the middle of supernatural events.
This OST is composed by Michiru Oshima, who also rearranged Beethoven's Tempest as an OST for this anime and wanted other musics to be in harmony with that, so we can see similarities between Beethoven's compositions.