One of Bob Dylan’s best songs becomes one of Eric Clapton’s weakest. Perhaps going to the well once too often with its reggae syncopation, Clapton’s perfunctory vocals meander nearly as indifferently as their instrumental backing. Dylan’s version, vocal imperfections and all, has an emotional power that’s missing here. Clapton’s effort seems weirdly inert. Where Dylan imbues his song with sympathetic, melancholy resignation, it’s difficult to say what viewpoint Clapton is attempting to convey. Given the powerhouse cover version by Guns N’ Roses, it’s clear that ”Knockin’ on Heaven’s Door” is versatile enough to be performed in many widely differing styles. That seems to be the major problem here. To be coming from one of the most stylish performers in Rock history, there just isn’t much style to this.