The title track of Bruce's solo album form 2005 is listed as ''A Tyranny Of Souls'' (in Wikipedia) and ''Tyranny Of Souls'' (on the back of the CD) - which is true? The album is called TOS, so probably the latter....
...although, (for example) the album is called The Chemical Wedding but the title track is without ''The''.
Basically, what
@GhostofCain says - always take what the CD says over Wikipedia. This isn't a jab at Wikipedia, it's just the basic principle that if there is a conflict of information, the information from the primary source (the CD cover, authored or authorised by Bruce) takes precedence over the secondary source (what somebody else wrote about it). I could write for two hours about the "buts", "ifs" and "supposedlys" about this (my dissertation deals with such questions at great length), but in a case as inconsequential as this, it's the most reasonable way to go about it.
Having said that - my CD cover lists the track title as
A Tyranny of Souls. I bought it right when it was released in 2005, so I can only imagine the track title changed in a re-release or that different issues wrote the track title differently. I saw that the 2017 vinyl reissue omits the
A. So both versions are officially sanctioned. The version with
A seems to have been the original one, the one without seems to be the one that is now being promoted. In that case, it's really your decision what you prefer. In my collection, I list the track as
A Tyranny of Souls because that's what I'm used to and because it helps distinguish the track from the album title.