Does recorded music change?

"I like Furtwangler, so when CD review recommended the 1944 Bruckner symphony 8 recording on Musical Concepts I thought 'ummm, I'll try that'. The recording is excellent for 1944, indeed it sounds as good as a CBS recording from the sixties. The first movement is very powerful, then the Scherzo begins. It is fast, then it slows down, then it speeds up again, it twists, it turns 'Oh dear' I thought, what have I done, £5 down the drain. However three playings later and all seems fine, what a performance. I now play the Bohm recording on DG and think 'how boring'. Recorded music can be a slippery thing, it's never the same twice, I don't get it."

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