Question: The fourth studio album of this artist featured both Elton John and Bernie Taupin
Context: Taupin is lyricist Bernie Taupin's first solo album.  It is a spoken word album of his poetry.  Taupin is well known for his collaboration with Elton John writing the lyrics to the vast majority of songs on his albums, and he worked with the same musicians John used on his albums in order to create his own.  Gus Dudgeon produced the album and Steve Brown coordinated it. "I've Been Loving You" is the 1968 debut single by Elton John with lyrics credited to Bernie Taupin (although John later admitted that he wrote the song by himself, giving Taupin credit as an effort to earn Taupin his first publishing royalties).  The B-side is "Here's to the Next Time", an Elton John composition.  "I've Been Loving You" was not originally included on any album and the single was withdrawn shortly after its release.  Neither side appeared on any official album release until the 1992 "Rare Masters" box set (which featured previously unreleased stereo mixes of both). "Don't Let the Sun Go Down on Me" is a song written by English singer Elton John and his lyricist Bernie Taupin.  It was originally recorded in 1974 by Elton John for his studio album "Caribou" and was released as a single that peaked at number two on the "Billboard" Hot 100 chart and reached number 16 on the UK Singles Chart.  The song found further success in 1991 in a live cover version recorded as a duet between John and George Michael, which reached number one in the UK and US. Goodnight Vienna is the fourth studio album by Ringo Starr.  It was recorded in the summer of 1974 in Los Angeles, and released later that year.  "Goodnight Vienna" followed the commercially successful predecessor "Ringo", and Starr used many of the same players, including Billy Preston, Klaus Voormann, Robbie Robertson, Harry Nilsson, and producer Richard Perry.  The title is a Liverpool slang phrase meaning "it's all over". He Who Rides the Tiger was a 1980 solo album from longtime Elton John lyricist Bernie Taupin.  It is his second effort following his 1971 spoken word album "Taupin".  Taupin co-wrote all the songs in the album with The Buckinghams former guitarist Dennis Tufano and sang lead vocals in all of them.  Although the album was recorded during a time when John and Taupin had interrupted their collaboration, John lent backing vocals on "Love (The Barren Desert)".  The album was released on CD by American Beat Records on March 10, 2009. "Mona Lisas and Mad Hatters" is a song from the Elton John album "Honky Château".  The lyrics were written by Bernie Taupin and is his take on New York City after hearing a gun go off near his hotel window during his first visit to the city.  The song's lyrics were partly inspired by Ben E. King's "Spanish Harlem," written by Jerry Leiber and Phil Spector, in which he sings "There is a rose in Spanish Harlem."  In response to this, Taupin writes, Allmusic critic Stewart Mason noted that the song is "less saccharine than many similar Elton John and Bernie Taupin ballads" and praised the "somewhat uncharacteristic emotional directness" of its lyrics.  It was released as the B-side of the "Harmony" U.K. single in 1980. "Sick City" is a song by Elton John with lyrics written by Bernie Taupin.  It is the B-side of the single release of "Don't Let the Sun Go Down on Me", released in 1974.  It later appeared on the 1995 remaster of the album "Caribou".  The song is about a groupie, and the life in 1970's New York which Bernie Taupin has had a love/hate relationship with from time to time.  Musically it features the Tower of Power Horns which appear on "Caribou".  It also features altered piano tones through a Leslie speaker. "Come Down in Time" is the second track on Elton John's third album, "Tumbleweed Connection", released in 1970.  The lyric was written by Bernie Taupin, Elton's long time writing partner.  The song was originally recorded for John's second album, "Elton John".  The song was played alongside the Sydney Orchestra in a 1986 live performance. "Snookeroo" was Elton John and Bernie Taupin's contribution to Ringo Starr's 1974 album "Goodnight Vienna". Sleeping with the Past is the 22nd studio album by the English singer-songwriter Elton John, released on 29 August 1989.  It is his best-selling album in Denmark (where it was recorded) and is dedicated to his longtime writing partner Bernie Taupin.  The album features his first solo number-one single, "Sacrifice", in his home country of the UK, which helped the album also hit number one there, his first since 1974's "Elton John's Greatest Hits".  John and Taupin meant for the songs to reflect the style of 1960s R&B icons such as Marvin Gaye, Otis Redding and Sam Cooke, whom they admired.  It also became his first platinum album in the UK since 1983.  In the US it was certified gold in October 1989 and platinum in April 1990 by the RIAA.  Guy Babylon made his debut on this album and would continue to play keyboards with John for the next 20 years, while Fred Mandel left the band shortly after.  John went into rehabilitation in 1990.
Answer: Ringo Starr