But I feel they should shoulder the blame for the fetish with “completism” – in their inexorable march to record every note ever composed, irrespective of its merit.

This CD is a case in point: the only reasonably well-known work is the Op 35 so-called Eroica variations on that theme used first in the Prometheus ballet music and then the finale of the eponymous symphony. Ian Yungwook Yoo is a fine pianist, who makes the crucial distinction of contrasting each variation and investing them with a particular quality. He misses nothing. The opening hauntingly anticipates Beethoven’s Op 111, his ultimate and for me greatest piano work, but Variation 5 has witty syncopations. There is playfulness in other sections and power in the concluding fugue, which prefigures the titanic conclusion of the Hammerklavier.

I have to confess that, despite the advocacy of Ian Yungwook Yoo, I found the other works on this CD indescribably tedious. Anyone familiar with the aforementioned Prometheus ballet or the Triple Concerto knows that Beethoven wasn’t always storming the barricades or shaking his fist at fate, but I found 48 minutes of variations on extremely obscure music just too much, especially at one sitting. The four stars are just for the playing.