Question: What was Phil Lynott's most successful group that included Brian Downey in four songs?

full_context: Document 1: Out in the Fields – The Very Best of Gary Moore: Out in the Fields: The Very Best of Gary Moore is a compilation album by Gary Moore. Released in 1998, the album encompasses a part of Moore's immense career from 1982 to 1992, focusing predominantly on the hard rock albums Moore released during that period. As well as the regular 1-disc version, a 2-CD limited edition was also released; the second disc contains several live and studio B-sides, a non-album single and a single remix.
Document 2: Brian Downey (drummer): Brian Michael Downey (born 27 January 1951) is an Irish drummer, best known as the drummer and a founding member of the rock band Thin Lizzy. Along with Phil Lynott, Downey was the only constant member of the hard rock group until their break-up in 1983. Downey also co-wrote several Thin Lizzy songs. Allmusic critic Eduardo Rivadavia has argued that Downey is "certainly one of the most underrated [rock drummers] of his generation".
Document 3: Gary Moore: Robert William Gary Moore (4 April 1952 – 6 February 2011) was a Northern Irish musician, most widely recognised as a singer, songwriter, and virtuoso rock and blues guitarist.
Document 4: Phil Taylor (musician): Philip John Taylor (21 September 1954 – 11 November 2015), better known as Phil "Philthy Animal" Taylor, was an English rock drummer in the English rock band Motörhead from 1975–1984 and 1987–1992 recording eleven studio albums and four live albums, including "No Sleep 'til Hammersmith" and "Nö Sleep at All," between them. The Motörhead line-up consisting of Lemmy, "Fast" Eddie Clarke and Taylor are considered the 'classic' line-up of the band.
Document 5: Phil Coulter: Phil Coulter (born 19 February 1942) is an Irish musician, songwriter and record producer. He was awarded the Gold Badge from the British Academy of Songwriters, Composers and Authors in October 2009.
Document 6: Sarah (Thin Lizzy song): "Sarah" is a pop song released in 1979 by Irish rock group Thin Lizzy, included on their album, "". The song was written by the band's frontman Phil Lynott and guitarist Gary Moore about Lynott's newborn daughter. The song was also issued as a single, and appeared on several compilation albums including "". The song was never performed live by Thin Lizzy, but it was adopted as a live favourite by Lynott's post-Thin Lizzy project, Grand Slam, and featured on "Live in Sweden 1983", a recording of Lynott's solo band.
Document 7: Essential Montreux: Essential Montreux is a special edition, five CD box-set, by Northern Irish, blues rock guitarist and singer, Gary Moore. The box-set features five out of the six performances Gary Moore made at the Montreux Jazz Festival. His live performances at Montreux that feature in this box-set are Live at Montreux 1990, 1995, 1997, 1999 and 2001.
Document 8: Thin Lizzy: Thin Lizzy are a hard rock band formed in Dublin, Ireland in 1969. Two of the founding members, drummer Brian Downey and bass guitarist and lead vocalist Phil Lynott, met while still in school. Lynott led the group throughout their recording career of twelve studio albums, writing most of the material. Thin Lizzy's most successful songs, "Whiskey in the Jar" (a traditional Irish ballad), "Jailbreak" and "The Boys Are Back in Town", were all major international hits. After Lynott's death in 1986, various incarnations of the band emerged over the years based initially around guitarists Scott Gorham and John Sykes, though Sykes left the band in 2009. Gorham later continued with a new line-up including Downey.
Document 9: Live at the Marquee (Gary Moore album): Live at the Marquee (known in Japan as simply Live) is a live album by Gary Moore, recorded over two nights in 1980 at the Marquee Club in London. For the recording, Moore enlisted former Lone Star frontman, Kenny Driscoll to provide lead vocals (Driscoll's replacement in Lone Star, John Sloman, would later perform with Moore), Andy Pyle of The Kinks fame to play bass, former Black Oak Arkansas and Pat Travers drummer Tommy Aldridge, and Moore's former Colosseum II bandmate, keyboardist Don Airey, who would go on to contribute to many of Moore's later solo works.
Document 10: Phil Lynott: Philip Parris "Phil" Lynott ( ; 20 August 1949 – 4 January 1986) was an Irish musician, singer and songwriter. His most commercially successful group was Thin Lizzy, of which he was a founding member, the principal songwriter, lead vocalist and bassist. He later also found success as a solo artist.
Document 11: Live at Montreux 2010: Live at Montreux 2010 is a live album and Blu-ray/DVD by the Northern Irish, blues rock guitarist and singer, Gary Moore. It was recorded at the Montreux Jazz Festival on 6 July 2010, and released on 19 September 2011. This would prove to be Gary Moore's last filmed performance before his death on 6 February 2011.
Document 12: Back on the Streets (Gary Moore album): Back on the Streets is an album by Northern Irish blues-rock guitarist Gary Moore, released in 1978, and his first authentic solo record (1973's "Grinding Stone" album being credited to "The Gary Moore Band"). Thin Lizzy bassist/vocalist Phil Lynott and drummer Brian Downey appear on four songs, including "Don't Believe A Word" (which originally appeared on the 1976 Thin Lizzy album "Johnny the Fox") and the UK top 10 single "Parisienne Walkways". On the album's sleeve, Moore is depicted leaving notorious prison Wormwood Scrubs in the Inner London Borough of Hammersmith and Fulham in a photograph by Chalkie Davies.
Document 13: Parisienne Walkways: "Parisienne Walkways" is a song by guitarist Gary Moore that reached number 8 in the UK Singles Chart in May 1979. The song is featured on Moore's album "Back on the Streets" and features a vocal from Thin Lizzy frontman, Phil Lynott, who co-wrote the song with Moore. Lynott also played bass guitar on the track, alongside Thin Lizzy drummer Brian Downey, thus reuniting the short-lived 1974 Thin Lizzy line-up which had recorded "Still in Love with You" and the single "Little Darling". The melody of "Parisienne Walkways" is based on the jazz standard "Blue Bossa" by Kenny Dorham. It was Gary Moore's signature song.
Document 14: Dedication: The Very Best of Thin Lizzy: Dedication: The Very Best of Thin Lizzy is a compilation album released by rock group Thin Lizzy in 1991. The only previously unreleased track was "Dedication", which was reconstructed after Phil Lynott's death using an old 8 track demo recording of the song (originally recorded around 1985) to provide the bass and vocal lines, with new guitar and drum parts added by Scott Gorham and Brian Downey.
Document 15: Vibe for Philo: The Vibe for Philo is a one-day festival/concert that occurs yearly as a tribute to Thin Lizzy frontman Phil Lynott on January 4, the anniversary of his death. It was first organized in 1987 by Lynott's "friend" Smiles Bolger who still runs the festival to this day. Each year a variety of musicians perform including Thin Lizzy tribute bands as well as members of bands Phil played in and reformed versions of these bands, such as when a reformed version of Thin Lizzy performed in 1996. Each year the festival has a title, usually named after a Thin Lizzy song. Highlights are uploaded to YouTube.
ground_truth: Thin Lizzy