Leonard Bernstein's conducting, though not always to the composer's intentions is very passionate. In this recording of the Rite of Spring and the Firebird, I believe not only was Bernstein amazingly passionate, but he also stayed true to the composer's intentions. The performances of these extremely difficult pieces are very emotional and pulled off well, due in part to the fact that they are live performances. All of it is heard in amazing digital sound. Plus the liner notes are interesting. I've heard that Bernstein's interpretations with the London Symphony are even better. Though I've never heard them, I know they must be amazing because these totally blew me away. Forget Boulez's interpretation. Great as it may be, it doesn't compare to Bernsteins. The only one that I thought came close was Karajan's. BTY, I'd recommend buying these performances as part of DG's master's series rather than the LB Series, because for a few extra bucks you get another cd with two other Stravinsky works. Either one you choose, I'm sure you will not be disappointed.