In 1995, Davis was appointed principal conductor of the London Symphony Orchestra, the culmination of a long association with the orchestra. He had first conducted the LSO in 1959, and in 1964 he headed the orchestra's first world tour. He became principal guest conductor in 1975 and was at the helm in the LSO's first major series at its new home, the Barbican Centre, in a Berlioz/Tippett festival in 1983. In 1997 he conducted the LSO's first residency at Lincoln Center in New York City. Davis was the longest-serving principal conductor in the history of the LSO, holding the post from 1995 until 2006, after which the orchestra appointed him its President, an honour previously held only by Arthur Bliss, William Walton, Karl Böhm and Leonard Bernstein. On 21 June 2009, 50 years to the day after his first LSO performance, a special concert was given at the Barbican, at which present-day players were joined by many past members of the orchestra. His programme for the concert was Mozart's Symphony No 40 in G minor, and Brahms's Piano Concerto No 2, with Nelson Freire as soloist.