Soft Cell were an English synth-pop duo, Marc Almond and Dave Ball, who turned an obscure 1960s northern-soul number into one of the defining electronic singles of the 1980s. Their stark, pulsing reinvention of "Tainted Love", released in 1981, became a worldwide hit and a permanent fixture of the synth-pop canon, its two-note hook instantly recognisable decades later.
The duo had a real, often confrontational catalogue and a devoted cult following, with other UK hits in their day, but nothing came close to the global reach of that one reinvented cover.
On streaming, "Tainted Love" sits near 1.1 billion plays, while their next genuinely different song trails far behind. That sends the ratio above 30, many times our 5.0 line.
By our measure Soft Cell are a certified one-hit wonder, with the streaming-era caveat for an act of their vintage and the note that their signature is itself a cover. They took someone else's forgotten song, remade it completely, and watched their version eclipse not just the original but everything else in their own catalogue. That two-note hook remains one of the most recognisable sounds in pop.