[Tonchi]

There's a considerable difference between "performance" of a particular piece and an "interpretation" of it. You can never be sure what you are going to get, so if the performer or group has a good reputation you ought to give him/her/them a chance. It might turn out to be a really interesting take on a work you are familiar with, even if not an exact duplicate. As an example I mention "Elenore Rigby" by Vanilla Fudge, which I actually liked BETTER than the original recorded by The Beatles. Besides, even the band/group who made a work famous gets tired of playing it several times every night and starts messing with it, improvising. After a few years, they positively hate the song. That is why I used to dread going to live concerts just to leave disappointed that my "favorite song" was played with irrelevant solos and in a different key and with half the group not even able to stand upright.