Answer the question at the end by quoting:

Henry Havelock Ellis, known as Havelock Ellis (2 February 1859 - 8 July 1939), was an English physician, writer, progressive intellectual and social reformer who studied human sexuality. He co-authored the first medical textbook in English on homosexuality in 1897, and also published works on a variety of sexual practices and inclinations, as well as on transgender psychology. He is credited with introducing the notions of narcissism and autoeroticism, later adopted by psychoanalysis. Ellis was among the pioneering investigators of psychedelic drugs and the author of one of the first written reports to the public about an experience with mescaline, which he conducted on himself in 1896.
Ellis, son of Edward Peppen Ellis and Susannah Mary Wheatley, was born in Croydon, Surrey (now part of Greater London). He had four sisters, none of whom married. His father was a sea captain, his mother the daughter of a sea captain, and many other relatives lived on or near the sea. When he was seven his father took him on one of his voyages, during which they called at Sydney, Callao and Antwerp. After his return, Ellis attended the French and German College near Wimbledon, and afterward attended a school in Mitcham. In April 1875, Ellis sailed on his father's ship for Australia; soon after his arrival in Sydney, he obtained a position as a master at a private school. After the discovery of his lack of training, he was fired and became a tutor for a family living a few miles from Carcoar. He spent a year there and then obtained a position as a master at a grammar school in Grafton. The headmaster had died and Ellis carried on the school for that year, but was unsuccessful. At the end of the year, he returned to Sydney and, after three months' training, was given charge of two government part-time elementary schools, one at Sparkes Creek, near Scone, New South Wales and the other at Junction Creek. He lived at the school house on Sparkes Creek for a year. He wrote in his autobiography, "In Australia, I gained health of body, I attained peace of soul, my life task was revealed to me, I was able to decide on a professional vocation, I became an artist in literature these five points covered the whole activity of my life in the world. Some of them I should doubtless have reached without the aid of the Australian environment, scarcely all, and most of them I could never have achieved so completely if chance had not cast me into the solitude of the Liverpool Range."

What else is related to his teaching?

obtained a position as a master at a private school. After the discovery of his lack of training, he was fired and became a tutor for a family

Answer the question at the end by quoting:

OK Go is an American rock band originally from Chicago, Illinois, now based in Los Angeles, California. The band is composed of Damian Kulash (lead vocals, guitar), Tim Nordwind (bass guitar and vocals), Dan Konopka (drums and percussion) and Andy Ross (guitar, keyboards and vocals), who joined them in 2005, replacing Andy Duncan. The band is known for its often quirky and elaborate one-take music videos. The original members formed as OK Go in 1998 and released two studio albums before Duncan's departure.
The band's lead singer, Damian Kulash, met bassist Tim Nordwind at Interlochen Arts Camp when they were 11. Kulash was in for graphic design, Nordwind for music. The band name comes from an art teacher of the band members saying, "OK... Go!" while they were drawing. They kept in touch after camp, often exchanging mixtapes which influenced each other's musical taste and the band's future sound. They met the band's future guitarist and keyboardist Andy Duncan in high school. Nordwind and Duncan moved to Chicago for college, where they formed the band Stanley's Joyful Noise with drummer Dan Konopka. The name OK Go was adopted in 1998, when Kulash moved to Chicago to join the band. The band plastered the city with posters for its earliest gigs and within a year had shared the stage with international artists such as Elliott Smith, the Promise Ring, the Olivia Tremor Control and Sloan. At the end of 2000, the band was invited by radio host Ira Glass to serve as the house band for live performances of This American Life in Boston, New York, and Chicago. The band self-released two EPs, titled Brown EP (2000) and Pink EP (2001), which were culled from an album's worth of songs recorded in February 2000 with producer Dave Trumfio, to serve as demos. The early music had electronic influences, as Kulash told the Chicago Reader in 2001, "We were trying to figure out how we could get a sampler and beats to work in rock songs that didn't sound like rip-offs of Portishead." The demos did not land the band a label deal, but got them the attention of booking agent Frank Riley, who offered them shows with They Might Be Giants, a relationship that has endured as OK Go opened for the band numerous times during this period, and was introduced to the band's manager by them. Though the members of OK Go eventually left for Los Angeles and New York, they consider themselves a Chicago band. In a 2011 interview, Kulash described the band's formative years: "As far as the band is concerned, we only have one home town. We all live in L.A. now but there's only one period of your life as a band where you're playing the same clubs every week or every month, and you know everybody in every other band; and it's all your friends, all the people that work at the clubs, and it's such a community. Chicago had such a close-knit and intense community five years ago when we were here. It's amazing. The Empty Bottle was where it all started for us. We played at the Metro and the Double Door as well."

When did they start playing together?
1998,