Nicko yells and hits the cymbal a few times before the band kicks in with a strong uptempo groove that serves as the verse. This breaks into a soaring chorus-like section with a nice harmonized lead.
An extended uptempo interlude follows, leading into a pretty good solo that breaks into a great descending guitar lead that will be repurposed by the band in several different songs for many years to come. This cuts into a great soaring solo on top of busy percussion before returning to the verse groove. Another round of "verse" and "chorus" and a quick swaying outro lead wraps things up.
This is a strong but not mindblowing instrumental that sounds like it was constructed to have lyrics, but just never got any. There are a couple of great parts, but most of it is just good. 7/10.
With every instrumental, Maiden only got better and better, culminating in this blazing track, which feels like a look into the world of Powerslave and all that's in it. Bruce isn't even necessary here, and where that should feel out of place, it isn't. "Losfer Words" is a strong as fuck number with everyone present on the track giving a great performance. 9