The instrumental duo Sisters Of… consists of multi-instrumentalists Aaron Coker and Chris Clark who have put out a couple releases via Crowquill Records. As the band is working on their follow-up their debut LP, The Serpent, The Angel, and The Adversary, they have just recently released a promotional single, "Adulescentia," which features A Light Within's vocalist Kyle Brandt.
The 6-minute track adds progressive and atmospherical elements to Russian Circles-like framework and a hint of Devin Townsend's softer side. While it is difficult to pinpoint the genre for both this song and the band's included, the music presented certainly will strike your fancy if you're a fan of the non-conventional aspects of metal. You can listen below.
[youtube]https://www.youtube.com/watch?v=5ZXfoWx5vbM&[/youtube]