identify recording of sprach zarathustra

[xristy]

Hello,

I'm trying to identify a recording from decades ago of Also Sprach Zarathustra. I think it was from the 50s on RCA. The key characteristic of the recording was that in Sunrise at the crescendo there emerges out of raw power the crystal clear sound of a triangle. I recall it as magical and moving and lately thought I'd try and find it on the internet but the various recordings that I've listened to just don't seem to have that triangle. I thought it might have been Fritz Reiner at Chicago but the recordings that I found at Amazon (Richard Strauss in High Fidelity) and one at iTunes on an album including Eroica do not have the quality that I remember - I have seen mention that there are two "great" recordings that Reiner made and I don't know if either of the ones that I tried (I also tried von Karajan and Mheta but they don't seem to be it either) are one of the great recordings. I don't know if it was Reiner. I recall the album cover as a kind a dark abstract cover with reds and blues.

I suspect this is a kind of silly post but I thought I try any way.

Thanks in advance,
Xristy