What makes Letters From the Labyrinth by Trans-Siberian Orchestra notable?

'Letters From the Labyrinth' was well received upon release, debuting at number 8 on the Billboard 200 chart and showcasing the band's signature storytelling style. The album also contributed to TSO's legacy of pushing genre boundaries, further influencing the symphonic metal scene. Released on January 1, 2015, 'Letters From the Labyrinth' marked Trans-Siberian Orchestra's first studio album in nearly a decade, following 2004's 'The Lost Christmas Eve.' At this point, the band had established a solid reputation for their elaborate live performances and concept albums blending rock with classical music influences.