What makes The Uninvited Guest by Marillion notable?

This album is notable for its critical reception and commercial performance, reaching number 18 on the UK Singles Chart. The song 'Uninvited Guest' exemplifies Marillion's ability to merge progressive rock with more mainstream appeal, influencing subsequent neo-prog bands and solidifying their place in the late '80s music landscape. By the time 'The Uninvited Guest' was released in late 1989, Marillion had already established themselves as a significant force in the progressive rock scene with their previous albums like 'Misplaced Childhood' (1985). This single marked a transitional phase for the band, showcasing their evolution into more accessible pop-inflected sounds while retaining their complex musicality.