I like the slower version better, but you used software to slow it down 22% without changing pitch. If the record had been recorded in the vicinity of 61 rpm (the 22% reduction) and then played at 78 the pitch would have gone up. I don't have the ablilty to decipher notes by ear. I would be interested to know in which key the fast release plays and what key they would have had to play at 61 rpm to match the key at 78 rpm. Figuring out that key might make it easier to guess what the actual recording speed might have been.