sentences:  He was the resident conductor of the Houston Symphony Orchestra, and the musical director and conductor of the Lansing Symphony Orchestra (Michigan) 1967–1978.Roller was a favorite of New Zealand, having appeared there six times to take the New Zealand Symphony Orchestra on tour, recording with them for television and radio, and also performing with the Royal Christchurch Society in an All-Beethoven concert.Roller was in demand as a conductor of educational honor groups, making appearances throughout the U.S. as conductor of over 45 all-state orchestras, MENC, region orchestras, and string festivals, as well as the Congress of Strings on both the East and West Coasts.