Opacities is the fourth EP by British progressive metal band SikTh.

SikTh reformed in 2014 and played at Download Festival followed by a UK tour.

[4] The band announced they would begin recording a new album in summer 2015 with a release scheduled sometime in November/December.

[5] In promotion of Opacities a music video for the song "Philistine Philosophies" was released on 2 November 2015.

[8] All lyrics are written by Mikee Goodman; all music is composed by SikTh, except where noted