Question: Which musician was in the rock band Jethro Tull, Ian Anderson or Jimi Goodwin?

Context paragraphs:
Roots to Branches: Roots to Branches is the 19th studio album by the British band Jethro Tull released in September 1995.  It carries characteristics of Tull's classic 1970s progressive rock and folk rock roots alongside jazz and Arabic and Far Eastern influences.  All songs were written by Ian Anderson and recorded at his home studio.  This is the last Tull album to feature Dave Pegg on the bass, and the first to feature keyboardist Andrew Giddings as an official band member, although he had contributed to "Catfish Rising" (1991) on a sessional basis.  It was also the final Tull album to be released through long-time label Chrysalis Records.

Scott Hammond (musician): Scott Hammond (born 4 June 1973) is an English freelance drummer.  He plays with Ian Anderson (the leader and frontman of British Rock band Jethro Tull) and has also toured with Jethro Tull itself.  He has been described as a "Jazz drummer with rock influences".

Through the Years (Jethro Tull album): Through the Years is a compilation album by the progressive rock band Jethro Tull.  It is something of a retrospective; with songs from many different periods in the band's history.  It is not a greatest hits album; as it has many songs not on such albums (Such as "Quizz Kid", "Still Loving You Tonight" and "Beastie".)  It has material spanning all over the band's existence, from their first album to "Roots to Branches".  The liner notes contain a short history of Jethro Tull, starting humorously with the question "Didn't Jethro Tull die of a drug overdose?"

Jimi Goodwin: Jimi Goodwin (born Jamie Francis Alexander Goodwin 28 May 1970 in Manchester) is the bassist, vocalist and guitarist for Doves.  Before their incarnation as Doves, the three members were in a house music group, Sub Sub.

Ian Anderson: Ian Scott Anderson, MBE (born 10 August 1947) is a Scottish-born musician, singer, songwriter and multi-instrumentalist best known for his work as the lead vocalist, flautist and acoustic guitarist of British rock band Jethro Tull.  Anderson plays several other musical instruments, including keyboards, bass guitar, bouzouki, balalaika, saxophone, harmonica, and a variety of whistles. His solo work began with the 1983 album "Walk into Light", and since then he released another five works, including the sequel to the Jethro Tull album "Thick as a Brick" (1972) in 2012, entitled "Thick as a Brick 2".

Stand Up (Jethro Tull album): Stand Up is the second studio album by the British rock band Jethro Tull, released in 1969.  Before recordings for the album began, the band's original guitarist Mick Abrahams resigned because of musical differences with Ian Anderson; Abrahams wanted to stay with the blues rock sound of their 1968 debut, "This Was", while Anderson wished to add other musical influences such as folk rock.  He was replaced by guitarist Martin Barre, who appeared on every Jethro Tull album from this point on.

20 Years of Jethro Tull (video): 20 Years of Jethro Tull (1988) is a video by Jethro Tull, also known as Jethro Tull: This Is the First 20 Years.  It consists of interviews with fans, frontman Ian Anderson, Terry Ellis and Chris Wright of Chrysalis Records, and John Gee of the Marquee Club, giving a rough chronology of the band, interspersed with clips from music videos and live performances.  Many of the live performances are culled from the Madison Square Garden performance during the 1978 "Heavy Horses" tour.

Rock Island (album): Rock Island is the 17th studio album by the British rock group Jethro Tull, released in 1989.  The album continued the hard rock direction the band took on the previous effort, "Crest of a Knave" (1987).  The line-up now included Ian Anderson, Martin Barre, Dave Pegg and drummer Doane Perry in his first full recording with the band, although he was already a member of Jethro Tull since 1984.  Without a permanent keyboard player, the role was shared by Fairport Convention's Martin Allcock and former Tull member Peter Vettese.

Heavy Horses: Heavy Horses is the eleventh studio album by British progressive rock band Jethro Tull, released on 10 April 1978.  It is considered the second album in a trilogy of folk-rock albums by Jethro Tull, although folk music's influence is evident on a great number of Jethro Tull releases.  The album abandons much of the folk lyrical content typical of the previous studio album, "Songs from the Wood" (1977), in exchange for a more realist perspective on the changing world - as a clear mention to the title track, the album is dedicated to the "indigenous working ponies and horses of Great Britain".  Likewise, the band sound is harder and tighter.  The third album in the folk-rock trilogy is "Stormwatch" (1979).

Crest of a Knave: Crest of a Knave is the sixteenth studio album by British rock band Jethro Tull, released in 1987.  The album was recorded after a hiatus of three years occasioned by a throat infection of vocalist Ian Anderson.  After the unsuccessful "Under Wraps", the band returned to a more heavily blended electric with acoustic style of sound, one of the top characteristics of Jethro Tull.  The album was their most successful since the 1970s, and the band enjoyed a resurgence on radio broadcasts, appearances in MTV specials, and the airing of music videos.  It was also a critical favourite, winning the 1989 Grammy Award for Best Hard Rock/Metal Performance Vocal or Instrumental.  The album was supported by "The Not Quite the World, More the Here and There Tour".

Supporting paragraphs: Ian Anderson Jimi Goodwin
Answer: Ian Scott Anderson