The essential Young Concert Artists organization, which has an impressive record of finding exceptional emerging artists, presents the next program in its New York series, featuring the 19-year-old French clarinetist Rapha�l S�v�re. Joined by the pianist Paul Montag, Mr. S�v�re plays works by Brahms, Boulez, Poulenc, Sylvain Picart and (joined by the violinist Paul Huang) Stravinsky.