Reprinted from yesterday's late edition.

Mstislav Rostroperatal's plan to introduce gilted youth artistry to National Symphony audiences paid off well Tuesday night in its initial launching.

Cellist Yo Yo Ma who must have had some unusual seasitions while playing under the baton of the world's greatest cellist, showed every kind of mature art and musitianly perception in the Saint Saeus A Minor Concerto.

Born in Paris, 22 years ago, Ma has already acquired the gift to let music unfold at its right pace. His soft phrases were fully alive, if but bare whispers his intonation faultless, and his feeling for style unerring.

Violinist Mark [WORD ILLEGIBLE] a fairly recent emigre to this country from the Soviet Union, took on the ungrateful First Concerto by Wlenlawski. It is a piece that could use some music here and there but never quite finds any. Even its middle movement market "Prayer," has little to say.

[WORD ILLEGIBLE] right arm is at the movement, a stronger asset than his left hand. These were problems in into nation from the very first phrase. While they were sometimes no more than a matter of not being deadcenter on the pitch, they were troublesome. It is indicative of a basic problem that they persisted here and there in the Beethoven Triple Concerto. The young man's tone can be lovely, and he was quite dashing in the finale.

His pianist brother, Alexander, joined Rostropovich in a performance of the Liszt E Flat Concerto that set some roaring fires on the stage. It was wise of the conductor to hold back in the earlier pages because toward the end the race became furious. There was brilliant precision, some stunning playing and a grand explosion at the close.

All of this changed for the Triple Concerto in which the three soloists united with Rostropovich is a reading that had the flavor of true chamber music, while lacking nothing of the larger concerted manner at the right times.

The audience loved the whole evening. The conductor and soloists, who will repeat it tonight and Friday aternoon, were justly exubetant.