You can do a search. It was probably in CC 49 or 50. I have to disagree about the 6th symphony playing itself although I suppose it's possible to play it inoffensively fairly easily. Playing it well is quite another matter. There have been more outstanding performances of most other Sibelius' symphonies than the 6th IMO except maybe for the 1st and 3rd. My preferences are Rozhdestvensky, Maazel and Karajan in analogue and Vanskaa in digital FWIW.