Problem: Background: Eurythmics were a British music duo consisting of members Annie Lennox and David A. Stewart. Stewart and Lennox were both previously in the band The Tourists (originally known as The Catch), who split up in 1980; Eurythmics were formed that year in Wagga Wagga. The duo released their first album, In the Garden, in 1981 to little fanfare, but went on to achieve global success with their second album Sweet Dreams
Context: After strenuous years of touring and recording (Eurythmics had released eight studio albums in eight years), a rift had developed between the duo and Eurythmics disbanded, although no formal notice was given. Stewart began writing film soundtracks and had a big international hit in 1990 with the instrumental track "Lily Was Here" (featuring saxophonist Candy Dulfer). The single reached no.6 in the UK and the Top 20 throughout much of Europe, as well as in Australia and the US. He also formed a band called The Spiritual Cowboys, releasing two albums with this group in the early 1990s. Lennox took time off from her career to have a baby and to consider a life after Eurythmics. Accordingly, the duo had very little communication with each other from 1991 to 1998. In 1991, Eurythmics' Greatest Hits collection was released, entering the UK album chart at No. 1 and spending a total of 10 weeks at that position, as well as becoming a massive worldwide seller. New remixes of "Sweet Dreams" and "Love Is a Stranger" were also released as singles at this time. During 1993, a live album entitled Live 1983-1989 featuring recordings from various years throughout Eurythmics' career was also released. In 1992, Lennox released her first solo album, Diva. The album was a critical and popular success, entering the UK album chart at no.1 and achieving quadruple platinum status (more than any Eurythmics studio album had done), as well as producing a string of five hit singles. She followed this up in 1995 with her second album, Medusa, an album of cover versions. It became her second number one album in the UK, reaching double platinum status both there and in the US. Stewart, meanwhile, released the solo albums Greetings from the Gutter (1995), and Sly-Fi (1998), but neither was commercially successful.
Question: When did Stewart form this band?
Answer: in the early 1990s.

Problem: Background: Echo & the Bunnymen are an English rock band formed in Liverpool in 1978. The original line-up consisted of vocalist Ian McCulloch, guitarist Will Sergeant and bassist Les Pattinson, supplemented by a drum machine. By 1980, Pete de Freitas joined as the band's drummer. Their 1980 debut album, Crocodiles, went into the top 20 of the UK Albums Chart.
Context: In June 1982, the Bunnymen achieved their first significant UK hit single with "The Back of Love" (No. 19). In July 1982, they performed at the first WOMAD festival. This was followed in early 1983 with their first Top 10, the more radio-friendly "The Cutter", which climbed to No. 8. The parent album, Porcupine, hit No. 2 in the album chart. Now firmly established as a chart act, further hits followed with a one-off single, "Never Stop" (No. 15), and "The Killing Moon", a preview from the new album featuring a dramatic McCulloch vocal, which became the band's second UK Top 10 single at No. 9. Following a PR campaign which proclaimed it "the greatest album ever made" according to McCulloch, 1984's Ocean Rain reached No. 4, and today is widely regarded as the band's landmark album. Single extracts "Silver" (UK No. 30) and "Seven Seas" (UK No. 16) consolidated the album's continued commercial success. In the same year, McCulloch had a minor solo hit with his cover version of "September Song". Echo & the Bunnymen toured Scandinavia in April 1985, performing cover versions of songs from Television, the Rolling Stones, Talking Heads and The Doors. Recordings from the tour emerged as the semi-bootleg On Strike. Unfortunately for the band, Ocean Rain proved to be a difficult album to follow up, and they could only re-emerge in 1985 with a single, "Bring on the Dancing Horses" (UK No. 21), and a compilation album, Songs to Learn & Sing, which made No. 6 in the UK album chart. However, all was not well in the Bunnymen camp, and Pete de Freitas left the band. Their next album, the self-titled Echo & the Bunnymen (1987), was initially recorded with ex-ABC drummer David Palmer, but when de Freitas returned in 1986, it was largely re-recorded. Eventually released in mid-1987, the record sold well (UK No. 4), and was a small American hit, their only LP to have significant sales there. In the United States, the band's best-known songs were "The Killing Moon" and "Lips Like Sugar". "Bring on the Dancing Horses" is well known as one of the songs on the soundtrack to the John Hughes film Pretty in Pink. "The Killing Moon" was featured in the films Grosse Pointe Blank and Donnie Darko, and in Series 2, Episode 5 of the E4 series Misfits. Ocean Rain's "Nocturnal Me" was used to close out Stranger Things Season 1, Episode 5. The band also contributed a cover version of The Doors song "People Are Strange" to The Lost Boys soundtrack.
Question: How did they do this?
Answer:
performing cover versions of songs from Television,