What makes Ultraviolet by Kylesa notable?

'Ultraviolet' was well-received, debuting at number 2 on the Billboard Heatseekers chart and further establishing Kylesa as key players in the heavy music scene. Its exploration of diverse musical textures garnered praise for pushing the boundaries of sludge metal, influencing subsequent artists in the genre. Released in 2013, 'Ultraviolet' marked Kylesa's fifth studio album, showcasing their continued evolution following the critically acclaimed 'Spiral Shadow' in 2010. The band had solidified their identity within the sludge metal genre while experimenting with more melodic elements and dual vocal harmonies, reflecting a matured sound.