input: During his twelve-day educational trip to Tunis in April 1914 Klee produced with Macke and Moilliet watercolor paintings, which implement the strong light and color stimulus of the North African countryside in the fashion of Paul Cezanne and Robert Delaunays' cubistic form concepts. The aim was not to imitate nature, but to create compositions analogous to nature's formative principle, as in the works In den Hausern von Saint-Germain (In the Houses of Saint-Germain) and Strassencafe (Streetcafe). Klee conveyed the scenery in a grid, so that it dissolves into colored harmony. He also created abstract works in that period such as Abstract and Farbige Kreise durch Farbbander verbunden (Colored Circles Tied Through Inked Ribbons). He never abandoned the object; a permanent segregation never took place. It took over ten years that Klee worked on experiments and analysis of the color, resulting to an independent artificial work, whereby his design ideas were based on the colorful oriental world. Fohn im Marc'schen Garten (Foehn at Marc's Garden) was made after the Turin trip. It indicates the relations between color and the stimulus of Macke and Delaunay. Although elements of the garden are clearly visible, a further steering towards abstraction is noticeable. In his diary Klee wrote the following note at that time: In the large molding pit are lying ruins, on which one partially hangs. They provide the material for the abstraction. [...] The terrible the world, the abstract the art, while a happy world produces secularistic art. Under the impression of his military service he created the painting Trauerblumen (Velvetbells) in 1917, which, with its graphical signs, vegetal and phantastic shapes, is a forerunner of his future works, harmonically combining graphic, color and object. For the first time birds appear in the pictures, such as in Blumenmythos (Flower Myth) from 1918, mirroring the flying and falling planes he saw in Gersthofen, and the photographed plane crashes. In the 1918 watercolor painting Einst dem Grau der Nacht enttaucht, a compositional implemented poem, possible written by Klee, he incorporated letters in small, in terms of color separated squares, cutting off the first verse from the second one with silver paper. At the top of the cardboard, which carries the picture, the verses are inscribed in manuscript form. Here, Klee did not lean on Delaunay's colors, but on Marc's, although the picture content of both painters does not correspond with each other. Herwarth Walden, Klee's art dealer, saw in them a "Wachablosung" (changing of the guard) of his art. Since 1919 he often used oil colors, with which he combined watercolors and colored pencil. The Villa R (Kunstmuseum Basel) from 1919 unites visible realities such as sun, moon, mountains, trees and architectures, as well as surreal pledges and sentiment readings.

Answer this question "Who were Klee's colleagues during this period?"
output: in the fashion of Paul Cezanne and Robert Delaunays' cubistic form concepts.

Question: Donald Christopher Barber (born 17 April 1930) is an English jazz musician, best known as a bandleader and trombonist. As well as scoring a UK top twenty trad jazz hit, he helped the careers of many musicians, notably the blues singer Ottilie Patterson, who was at one time his wife, and vocalist/banjoist Lonnie Donegan, whose appearances with Barber triggered the skiffle craze of the mid-1950s and who had his first transatlantic hit, "Rock Island Line", while with Chris Barber's band. His providing an audience for Donegan and, later, Alexis Korner makes Barber a significant figure in the British rhythm and blues and "beat boom" of the 1960s.

Barber and Monty Sunshine (clarinet) formed a band in 1953, calling it Ken Colyer's Jazzmen to capitalise on their trumpeter's recent escapades in New Orleans: the group also included Donegan, Jim Bray (bass), Ron Bowden (drums) and Barber on trombone. The band played Dixieland jazz, and later ragtime, swing, blues and R&B. Pat Halcox took over on trumpet in 1954 when Colyer moved on after musical differences and the band became "The Chris Barber Band". In April 1953 the band made its debut in Copenhagen, Denmark. There Chris Albertson recorded several sides for the new Danish Storyville label, including some featuring only Sunshine, Donegan and Barber on double bass. In 1959 the band's version of Sidney Bechet's "Petite Fleur", a clarinet solo by Monty Sunshine with Barber on string bass, spent twenty-four weeks in the UK Singles Charts, making it to No. 3 and selling over one million copies, and was awarded a gold disc. After 1959 he toured the United States many times (where "Petite Fleur" charted at #5). In the late 1950s and early 1960s Barber was mainly responsible for arranging the first UK tours of blues artists Big Bill Broonzy, Sonny Terry and Brownie McGhee and Muddy Waters. This, with the encouragement of local enthusiasts such as Alexis Korner and John Mayall, sparked young musicians such as Peter Green, Eric Clapton and the Rolling Stones. British rhythm and blues powered the British invasion of the USA charts in the 1960s, yet Dixieland itself remained popular: in January 1963 the British music magazine, NME reported the biggest trad jazz event in Britain at Alexandra Palace. It included George Melly, Diz Disley, Acker Bilk, Alex Welsh, Kenny Ball, Ken Colyer, Sunshine, Bob Wallis, Bruce Turner, Mick Mulligan and Barber. Barber stunned traditionalists in 1964 by introducing blues guitarist John Slaughter into the line up who, apart from a break between April 1978 and August 1986, when Roger Hill took over the spot, played in the band until shortly before his death in 2010. Barber next added a second clarinet/saxophone and this line-up continued until 1999. Then Barber added fellow trombonist/arranger Bob Hunt and another clarinet and trumpet. This eleven-man "Big Chris Barber Band" offered a broader range of music while reserving a spot in the programme for the traditional six-man New Orleans line-up. A recording of the Lennon-McCartney composition "Catswalk" can be heard, retitled "Cat Call", on The Songs Lennon and McCartney Gave Away. Written by Paul McCartney the song was recorded in late July 1967 and released as a single in the UK on 20 October 1967.

Using a quote from the above article, answer the following question: Did it have any low points in selling?
HHHHHH
Answer:
he toured the United States many times (where "Petite Fleur" charted at #5).