Ruth Buchanan’s Rock of Ages was more than a novelty; it was a masterclass in genre-blending. Drawing on rockabilly’s twangy guitar and upbeat tempo, she redefined the hymn’s character. The arrangement retained the original lyrics, with lines like “Cleft for me, Lord, by thy side” now delivered with a grittier intensity, while Buchanan’s vocal emphasized the song’s emotional core. Her version not only highlighted her vocal prowess but also reflected the 1960s’ broader trend of reinterpreting classical and sacred works in pop formats—a trend seen in Elvis Presley’s gospel albums or The Moody Blues’ orchestral rock.