Music@Menlo, the premier chamber music festival, always provides stellar musicians, the finest in classical music, and innovative programming. Music lovers anywhere near Menlo Park-Atherton, CA, will have an opportunity on Sunday, October 13, to hear the renowned Emerson String Quartet perform with their new cellist, Paul Watkins. While he is new as a full time member of the Emersons, Mr. Watkins has played with individual members of the quartet in the last few seasons. He replaces cellist David Finckel in the first replacement of an Emerson member since 1979. Mr. Finckel is co-founder and co-artistic director of Music@Menlo with his wife, pianist Wu Han. The much honored couple together are also co-directors of the Chamber Music Society of Lincoln Center, New York, and Chamber Music Today, Seoul, Korea. No worries that Mr. Finckel will have too much leisure time on his hands. Mr. Watkins has been the cellist of the Nash Ensemble, in England, for 16 years. The Nash is a mixed chamber ensemble including piano and wind instruments with strings. He is also the Principal Conductor of the English Chamber Orchestra and a busy guest conductor and composer. When Mr. Watkins made his first appearance as a guest at Music@Menlo his extraordinary musicianship shone through delighting the Hedgehogs and the rest of the audience, too. Even as he was excellent as an ensemble member, he was clearly a special musician. The Emerson String Quartet has found an exciting new member. The 4 p.m., Oct. 13 concert is at the Center for Performing Arts at Menlo-Atherton. For tickets: see www.musicatmenlo.org or call 650/331-0202. The program includes quartets by Joseph Haydn, Shostakovich, and Mendelssohn. Future programs for M@M: Pianists in Paris with Jean-Efflam Bevouzet, Soyeon Kate Lee, Anne-Marie McDermott, Wu Han, Feb. 9; Alessio Bax, piano, May 11.