What makes Mare Vitalis by The Appleseed Cast notable?

'Mare Vitalis' is notable for its contribution to the emo genre during the early 2000s, showcasing a shift towards more experimental post-rock influences. It received positive reviews from critics and helped establish The Appleseed Cast as a significant act within the indie music scene, influencing many subsequent artists in the genre. Released in 2000, 'Mare Vitalis' was The Appleseed Cast's third album, following their sophomore effort 'Low Level Owl, Vol. 1.' At this point, the band was refining their sound, moving towards more expansive and atmospheric compositions that would define their later work.