Task: Question Answering
Input (English): Passage: Scary Monsters and Super Creeps (1980) produced the number-one hit "Ashes to Ashes", featuring the textural work of guitar-synthesist Chuck Hammer and revisiting the character of Major Tom from "Space Oddity". The song gave international exposure to the underground New Romantic movement when Bowie visited the London club "Blitz"—the main New Romantic hangout—to recruit several of the regulars (including Steve Strange of the band Visage) to act in the accompanying video, renowned as one of the most innovative of all time. While Scary Monsters used principles established by the Berlin albums, it was considered by critics to be far more direct musically and lyrically. The album's hard rock edge included conspicuous guitar contributions from Robert Fripp, Chuck Hammer, and Pete Townshend. As "Ashes to Ashes" hit number one on the UK charts, Bowie opened a three-month run on Broadway on 24 September, starring as John Merrick in The Elephant Man.Bowie paired with Queen in 1981 for a one-off single release, "Under Pressure". The duet was a hit, becoming Bowie's third UK number-one single. Bowie was given the lead role in the BBC's 1982 televised adaptation of Bertolt Brecht's play Baal. Coinciding with its transmission, a five-track EP of songs from the play, recorded earlier in Berlin, was released as David Bowie in Bertolt Brecht's Baal. In March 1982, the month before Paul Schrader's film Cat People came out, Bowie's title song, "Cat People (Putting Out Fire)", was released as a single, becoming a minor US hit and entering the UK Top 30.Bowie reached his peak of popularity and commercial success in 1983 with Let's Dance. Co-produced by Chic's Nile Rodgers, the album went platinum in both the UK and the US. Its three singles became Top 20 hits in both countries, where its title track reached number one. "Modern Love" and "China Girl" each made No. 2 in the UK, accompanied by a pair of "absorbing" promotional videos that biographer David Buckley said "activated key archetypes in the pop world. 'Let's Dance', with its little narrative surrounding the young Aborigine couple, targeted 'youth', and 'China Girl', with its bare-bummed (and later partially censored) beach lovemaking scene (a homage to the film From Here to Eternity), was sufficiently sexually provocative to guarantee heavy rotation on MTV". Stevie Ray Vaughan was guest guitarist playing solo on "Let's Dance", although the video depicts Bowie miming this part. By 1983, Bowie had emerged as one of the most important video artists of the day. Let's Dance was followed by the Serious Moonlight Tour, during which Bowie was accompanied by guitarist Earl Slick and backing vocalists Frank and George Simms. The world tour lasted six months and was extremely popular." At the 1984 MTV Video Music Awards Bowie received two awards including the inaugural Video Vanguard Award. 
Question: What was the name of the tour that featured back up vocalists Frank and George Simms?
Output (English): Serious Moonlight Tour.