1. Have you intentionally purchased multiple recordings of the same musical works?
2. If you have, why?
3. Which composers/musical works do you most feel the need to collect multiple recordings of?
As a general principle, I try not to own multiples. Partly it is because, with my rather limited resources, I would rather use my funds to expand the breadth of my collection. I would rather purchase new works than performances of something I already own. Because of this, I end up spending a fair amount of time
before purchasing reading reviews, testing out performances on Spotify, YouTube, etc., and also reading what people around here and other venues recommend. Part of that is simply the good fun of the search itself. Also, since chamber music makes up much of my collection, there are often only a handful of performances of individual works. It's easier if symphonies are one's first preference to end up seeking out multiple versions.
I realize that my tendency to avoid multiples differs significantly from most other collectors. I certainly can hear differences between performances, often significant differences, but in those cases where I have multiple recordings of the same work, I almost inevitably zero in on one performance as my preferred and listen to it to the exclusion of the others. I also tend
not to buy box sets, which is one of the ways one tends to accumulate multiple recordings. And in fact, probably the majority of the multiples that I own have come from buying (a small number of) box sets. If I end up with multiples that are not part of a box set, I generally end up selling back the CDs and deleting the files from my computer (but only after I've got a good sense of what I prefer).
In several cases, I want an HIP version and a non-HIP version. So for Bach's
Well-Tempered Clavier and
Goldberg Variations, I have both a piano version and a harpsichord version. While I generally prefer the HIP version, I have both a modern and an original-instrument version of Haydn's string quartets. In a few cases, I continue buying new performances in hopes of finding a version of something that I'm satisfied with (I've had a very hard time finding performances of Mozart's piano concertos that really satisfy me -- especially in terms of good acoustics).
There are a few significant exceptions to all this:
*Stravinsky's
Rite of Spring (Stravinsky himself; Markevich; Gergiev / Kirov; Boulez / Cleveland; Dudamel / Simon Bolivar)
*Beethoven's symphonies (Karajan 1962; Kleiber (5&7); Barenboim; Gardiner; Vanska)
*Beethoven's string quartets (Takacs Quartet; Alban Berg Quartett; Quatuor Mosaiques [for op. 18])
*Debussy's
Preludes (Jacobs; Samson Francois; Michelangeli; Bavouzet)
*Bartok's
Concerto for Orchestra and
Music for Strings, Percussion and Celesta (Reiner / Chicago; Boulez / Cleveland)
*Ravel's
Piano Concerto in G (Argerich; Zimerman; Bavouzet)
*Shostakovich's symphonies (Barshai, Haitink, Mravinsky, Petrenko, strays such as Bernstein doing #5)
These exceptions are because I sometimes want both a classic or historically famous performance (e.g. Stravinsky's
Rite, also Markevich) and an outstanding contemporary one (e.g. Gergiev, Boulez). In the case of contemporary performances of
Rite of Sping, Boulez captures the clarity and detail, Gergiev the savagery. But my interest in differences of interpretation here is more the exception than the rule.