Question: I've Been Loving You was the debut single for the pianist who has worked with Bernie Taupin since what year?

<P0-S0> Sir Elton Hercules John, (born Reginald Kenneth Dwight; 25 March 1947), is an English singer, pianist, and composer. <P0-S1>  In his five-decade career Elton John has sold more than 300million records, making him one of the best-selling music artists in the world. <P0-S2>  He has more than fifty Top 40 hits, including seven consecutive No. 1 US albums, 58 "Billboard" Top 40 singles, 27 Top 10, four No. 2 and nine No. 1. <P0-S3>  For 31 consecutive years (1970–2000) he had at least one song in the "Billboard" Hot 100. <P0-S4>  His tribute single, re-penned in dedication to the late Princess Diana, "Candle in the Wind 1997" sold over 33million copies worldwide and is the best-selling single in the history of the UK and US singles charts. <P0-S5>  He has worked with lyricist Bernie Taupin as his songwriting partner since 1967; they have collaborated on more than 30 albums to date. <P0-S6>  He has also composed music, produced records, and has occasionally acted in films. <P0-S7>  John owned Watford Football Club from 1976 to 1987, and 1997 to 2002. <P0-S8>  He is an honorary Life President of the club, and in 2014 had a stand named after him at the club's home stadium. <SEP> <P1-S0>  The B-side is "Here's to the Next Time", an Elton John composition. <P1-S1> "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). <P1-S2>  "I've Been Loving You" was not originally included on any album and the single was withdrawn shortly after its release. <P1-S3>  Neither side appeared on any official album release until the 1992 "Rare Masters" box set (which featured previously unreleased stereo mixes of both). <SEP> <P2-S0> James Cregan (born 9 March 1946) is an English rock guitarist and bassist, best known for his associations with Family, Steve Harley & Cockney Rebel and Rod Stewart. <P2-S1>  Cregan is a former husband of the singer Linda Lewis and worked with her as a record producer. <P2-S2>  He has also worked with London Quireboys, Glass Tiger, Katie Melua and formed "Farm Dogs" with Bernie Taupin. <SEP> <P3-S0> Sleeping with the Past is the 22nd studio album by the English singer-songwriter Elton John, released on 29 August 1989. <P3-S1>  It is his best-selling album in Denmark (where it was recorded) and is dedicated to his longtime writing partner Bernie Taupin. <P3-S2>  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". <P3-S3>  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. <P3-S4>  It also became his first platinum album in the UK since 1983. <P3-S5>  In the US it was certified gold in October 1989 and platinum in April 1990 by the RIAA. <P3-S6>  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. <P3-S7>  John went into rehabilitation in 1990.