Matt Haimovitz & Christopher O'Riley, cello and piano, respectively, have given us a most pleasant surprise in their complete recording of the complete Beethoven oeuvre for cello and piano on such period instruments, in a 2-CD set entitled Beethoven, Period. (Pentatone Oxingale Series 5186 475).
They utilize vintage instruments, tune to A=430 in keeping with various tunings of the era, and use the untempered tunings, all of which gives the music a decidedly different cast. The music has a resonant sweetness with the tuning, sounds startlingly different in key modulations and, because of the lower general volume levels of the piano in those days, gives the cello part a prominence and an overall transparency of parts you don't get in modern instrument versions.
The result is a very balanced interplay between the instruments and a very different feel in both forte and pianissimo passages. Listen to the resplendent Cello Sonata in A Major, op. 69, for example, and you will hear the music differently than what we have become accustomed to.
Haimovitz & O'Riley seem very at home in with the old resonances. Indeed their performances are detailed and filled with brio in the very best ways. They succeed capitally. Yet it all comes across in a wonderfully refreshing way.
This will be delightfully fascinating for all who know the music. It gives us a different sort of lyric appreciation of the music, a new life born of a return to the period sound.