According to Tchaikovsky scholar and author John Warrack, accepting Opp. 75 and 79 as a complete concerto within Tchaikovsky's intentions could be a misnomer - "What survives is a reconstruction in concerto form of some music Tchaikovsky was planning, not a genuine Tchaikovsky piano concerto". Music author Eric Blom adds, "It is true that even Taneyev did not know for certain whether Tchaikovsky, if he actually meant to turn out a three-movement concerto, would not have preferred to scrap the "Andante and Finale" altogether and to replace them by two entirely new movements; so if we decide that the finale at any rate is a poor piece of work, we must blame Taneyev for preserving it rather than Tchaikovsky for having conceived it. For we cannot even be sure how far the conception may have been carried out".