I had always heard about Martinon's recording of the Nielsen 4 when I was younger (about 20 years younger) but it was out of print at the time (knowing RCA, it probably only lasted about a year). However, my local college library had a copy of the disc and I must have checked it out multiple times. I recorded it on tape and lived with that. Finally I came upon the LP in my local record store (about 5 years later) and just about fainted! It was in great condition and I lived very happily, but wanting it on CD and also wanting others to hear this marvelous performance. In the mid 90's the British Navigator Series came out which had this recording along with Andre Previn's justly famous 1st. I should have bought that right away, because being an import, it was not easy to get after it's initital US run. Thanks to the internet, I found a used copy and was very pleased with the remastering. Now, these recordings now can be enjoyed by the general populace and I hope that their status as being "classics" will live forever. Both of these performances have an essential "Nielsen Quality" that of extreme forward motion and excitement. I have heard so many recordings of these works, and some are so romanticized that they get bogged down. Gould's 2nd is just such an animal. Right away you are transported to Nielsen's sound world. This performance is so exciting and thrilling and also is a testament to the glorious playing of the Chicago Symphony. The sound is not up to normal standards (for that, Chung and the Gothenburg on BIS still is the Gold Standard for me) but this performance is one of the best. The Fourth is another story. Jean Martinon was unlucky to be conducting the Chicago Symphony after Fritz Reiner, but he made so many wonderful recordings! Ravel,Roussel, Bizet, Lalo, Nielsen, Martinon himself, and Peter Mennin were all representative of his years at the CSO. Many of these recordings did not last in the catalogs for long (why was this, RCA?) and my well-taken care of lp's remain my only way to hear these performances-until now! Like Gould's recording of the Nielsen 2, this performance grabs you by the throat and never lets go. No big longuers here (Bernstein is the big sinner here). No unwanted big ritards, no suddenly slow tempos, just how the composer wrote the score. The timpani battle just jumps out at you and the timpanists are actually creditied! The sound seems a little bit more present than the previous remastering, and some allowances have to be made for the sound. BUT THIS PERFORMANCE IS FABULOUS! RUN, DO NOT WALK TO YOUR LOCAL CD STORE (OR AMAZON) and buy this CD before RCA in their infinite wisdom, put this CD out of print! But to do so would be to deprive the world of one of the best performances in the history of recorded sound!