Beethoven piano trios, to be precise. This is the Zingara Trio, whose recording of the Archduke and Ghost trios I have – it has the advantage of being both cheap and good, and if you like horses, there is one on the cover. I have never been able to figure out exactly what the horse has to do with either of the piano trios, but this is one of those things that I am willing to let go. I haven’t been able to track down any other Beethoven recordings of theirs, but apparently they exist, because they’re on YouTube.
Update: I told myself a while back that I was not going to purchase any new music for the rest of 2015, with the exception of 1) Dorothea Röschmann’s Mozart CD and the Fierrabras DVD from Salzburg and the Wigmore Hall live one once it comes out and 2) Joyce DiDonato’s next recording. There is a third exception to rule, which is Beethoven piano trios and Mitsuko Uchida’s Mozart sonata recordings. (I am aware that many of these three exceptions contain additions and sub-exceptions. It is like what Mark Twain said about rules in German grammar: there are usually more exceptions to the rule than there are instances of it.)