Scott Nikrenz, viola, 1969, followed by Nobuko Imai (until 1978), Jerry Horner (1978–1980), Bernard Zaslav (1980–1985), and Richard Young (1985–2007). Richard Sher, cello (1969–1972), Ron Leonard, 1972, succeeded by Marc Johnson (1973–2007). Further reading Interview with Shmuel Ashkenasi and Richard Young, June 21, 1989 Musical groups established in 1969 American string quartets Cedille Records artists