quality:corruption, linguistic:translation
1926–1942: Touring, final compositions, and Villa Senar

Rachmaninoff's life as a touring performer, and the demanding schedules that came with it, caused his compositional output to slow significantly. In the 24 years between his arrival in the US and his death, he completed just six new pieces, revised some of his earlier works, and wrote piano transcriptions for his live repertoire. He admitted that by leaving Russia, "I left behind my desire to compose: losing my country, I lost myself also". In 1926, having concentrated on touring for the past eight years, he took a year off and completed the Piano Concerto No. 4, which he had started in 1917, and Three Russian Songs, which he dedicated to Leopold Stokowski.

Rachmaninoff sought the company of fellow Russian musicians and befriended pianist Vladimir Horowitz in 1928. The men remained supportive of each other's work, each making a point of attending concerts given by the other, and Horowitz remained a champion of Rachmaninoff's works and in particular his Piano Concerto No. 3. In 1930, in a rare occurrence, Rachmaninoff allowed Italian composer Ottorino Respighi to orchestrate pieces from his Études-Tableaux, Op. 33 (1911) and the Études-Tableaux, Op. 39 (1917), giving Respighi the inspirations behind the compositions. By December 1931, his daughter was engaged to marry Boris Conus, with a second grandchild Alexander Conus born later to the couple. In 1931, Rachmaninoff and several others signed an article in The New York Times that criticised the cultural policies of the Soviet Union. The composer's music suffered a boycott in the Soviet Union as a result from the backlash in the Soviet press, lasting until 1933.

From 1929 to 1931, Rachmaninoff spent his summers in France at Clairefontaine-en-Yvelines near Rambouillet, meeting with fellow Russian émigrés and his daughters. By 1930, his desire to compose had returned and he sought a new location to write new pieces. He bought a plot of land near Hertenstein on the banks of Lake Lucerne, Switzerland, and oversaw the construction of his home which he named Villa Senar after the first two letters of his and his wife's name, adding the "r" from the family name. Rachmaninoff spent his summers at Villa Senar until 1939, often with his daughters and grandchildren, with whom he would drive his motorboat on Lake Lucerne, one of his favourite activities. In the comfort of his own home, Rachmaninoff completed Rhapsody on a Theme of Paganini in 1934 and the Symphony No. 3 in 1936.

In October 1932, Rachmaninoff began a demanding concert season that consisted of 50 performances. The tour marked the fortieth anniversary of his debut as a pianist, for which several of his Russian friends now living in America sent him a scroll and wreath in celebration. The frail economic situation in the US resulted in the composer performing to smaller audiences, and he lost money in his investments and shares. The European leg of this tour in 1933 saw Rachmaninoff celebrate his sixtieth birthday among fellow musicians and friends, after which he retreated to Villa Senar for the summer. In May 1934, Rachmaninoff underwent a minor operation and two years later, he retreated to Aix-les-Bains in France to improve his arthritis. During a visit to Villa Senar in 1937, Rachmaninoff entered talks with choreographer Michel Fokine about a ballet based on Niccolò Paganini that was to feature his rhapsody. It premiered in London in 1939 with the composer's daughters in attendance. In 1938, Rachmaninoff performed his Piano Concerto No. 2 at a charity jubilee concert at London's Royal Albert Hall to celebrate Henry Wood, founder of the Promenade concerts and an admirer of Rachmaninoff's who wanted him to be the show's only soloist. Rachmaninoff agreed, so long the performance was not broadcast on the radio due to his aversion to the medium.

The 1939–40 concert season saw Rachmaninoff perform fewer concerts than usual, totalling 43 appearances that were mostly in the US. The tour continued with dates across England, after which Rachmaninoff visited his daughter Tatyana in Paris followed by a return to Villa Senar. He was unable to perform for a while after slipping on the floor at the villa and injuring himself. He recovered enough to perform at the Lucerne International Music Festival on 11 August 1939. It was to be his final concert in Europe. With World War II imminent, he returned to Paris two days later, where he, his wife, and two daughters were together for the last time before the composer left Europe on 23 August. With financial help from Rachmaninoff, philosopher Ivan Ilyin was able to pay the bail and settle in Switzerland. Rachmaninoff would support the Soviet Union 's war effort against Nazi Germany from mid-1941 onwards, donating receipts from many of his concerts for the benefit of the Red Army.

Upon his return to the US, Rachmaninoff performed with the Philadelphia Orchestra in New York City with conductor Eugene Ormandy on 26 November and 3 December 1939, as part of the orchestra's special series of concerts dedicated to the composer in celebration of the thirtieth anniversary of his US debut. The final concert on 10 December saw Rachmaninoff conduct his Symphony No. 3 and The Bells, marking his first conducting performance since 1917. The concert season left Rachmaninoff tired, and he spent the summer resting from minor surgery at Orchard's Point, an estate near Huntington, New York on Long Island. During this period Rachmaninoff completed his final composition, the Symphonic Dances, Op. 45, which was premiered by Ormandy and the Philadelphia Orchestra in January 1941, with Rachmaninoff in attendance. In December 1939, Rachmaninoff began an extensive recording period which lasted until February 1942 and included his Piano Concerto Nos. 1 and 3 and Symphony No. 3 at the Philadelphia Academy of Music.