Okay, now I'm confused. I am only aware of Szell having recorded Tchaik 4 once with the LSO (the Culshaw version) - which I unfortunately do not have a copy of. Are you telling me that the version on Penguin Classics (which I was about to order) is not the same recording (ie. that he recorded it twice with the LSO?)? Gary Evoniuk a Szellot in North Carolina