Question: Keith Jarrett (born May 8, 1945) is an American jazz and classical music pianist. Jarrett started his career with Art Blakey, moving on to play with Charles Lloyd and Miles Davis. Since the early 1970s he has enjoyed a great deal of success as a group leader and a solo performer in jazz, jazz fusion, and classical music. His improvisations draw from the traditions of jazz and other genres, especially Western classical music, gospel, blues, and ethnic folk music.

In 1983, at the suggestion of ECM head Manfred Eicher, Jarrett asked bassist Gary Peacock and drummer Jack DeJohnette, with whom he had worked on Peacock's 1977 album Tales of Another, to record an album of jazz standards, simply titled Standards, Volume 1. Two more albums, Standards, Volume 2 and Changes, both recorded at the same session, followed soon after. The success of these albums and the group's ensuing tour, which came as traditional acoustic post-bop was enjoying an upswing in the early 1980s, led to this new standards trio becoming one of the premier working groups in jazz, and certainly one of the most enduring, continuing to record and tour for more than 25 years. The trio has recorded numerous live and studio albums consisting primarily of jazz repertory material. The Jarrett-Peacock-DeJohnette trio also produced recordings that consist largely of challenging original material, including 1987's Changeless. Several of the standards albums contain an original track or two, some attributed to Jarrett, but most are group improvisations. The live recordings Inside Out and Always Let Me Go (released in 2001 and 2002 respectively) marked a renewed interest by the trio in wholly improvised free jazz. By this point in their history, the musical communication among these three men had become nothing short of telepathic, and their group improvisations frequently take on a complexity that sounds almost composed. The standards trio undertakes frequent world tours of recital halls (the only venues in which Jarrett, a notorious stickler for acoustics, will play) and is one of the few truly successful jazz groups to play both straight-ahead (as opposed to smooth) and free jazz. A related recording, At the Deer Head Inn (1992), is a live album of standards recorded with Paul Motian replacing DeJohnette, at the venue in Delaware Water Gap, Pennsylvania, 40 miles from Jarrett's hometown, where he had his first job as a jazz pianist. It was the first time Jarrett and Motian had played together since the demise of the American quartet sixteen years earlier.

Using a quote from the above article, answer the following question: did they tour at all?
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Answer: The standards trio undertakes frequent world tours of recital halls

Problem: Paolo Cesare Maldini (Italian pronunciation: ['pa:olo mal'di:ni]; born 26 June 1968) is an Italian former professional footballer who played as a left-back and central defender for A.C. Milan and the Italy national team. He spent all 25 seasons of his career in the Serie A with Milan, before retiring at the age of 41 in 2009. He won 23 trophies with Milan while in the squad: the UEFA Champions League five times, seven Serie A titles, one Coppa Italia, five Supercoppa Italiana titles, four European Super Cups, two Intercontinental Cups and one FIFA Club World Cup. Maldini made his debut for Italy in 1988, enjoying a 14-year career before retiring in 2002 with 126 caps, a record at the time, which has since only been topped by Fabio Cannavaro in 2009 and Gianluigi Buffon in 2013.

On 16 February 2008, in the match against Parma at the Stadio Ennio Tardini, Maldini came on for defender Marek Jankulovski to make his 1,000th professional career appearance, of which 861 were with Milan, 12 with the Italy under-21 side, 1 with the Italian Olympic team and 126 with the Italy senior team. In European football, only the English goalkeeper Peter Shilton had collected more appearances at the time: 1,390 between 1966 and 1997. Maldini played his last game in the Champions League on 4 March 2008, a 2-0 loss at the San Siro in the last 16 against Arsenal which eliminated Milan from the 2007-08 Champions League. In 2008, Maldini was awarded the FIFA Order of Merit, as well as the Premio Internazionale Giacinto Facchetti, which is awarded to a player who was demonstrated both skill and fair play throughout his career. On 18 April 2009, Maldini announced that he would be retiring at the end of the 2008-09 season. On 17 May 2009, in the Stadio Friuli, Maldini played his 900th official match for Milan in a league game against Udinese. Maldini's last match in San Siro was on 24 May, a 3-2 loss against Roma, and was given a standing ovation by the fans. There was a small controversy, however, when the Milan Ultras fans known as Brigate Rossonere protested against Maldini as he said goodbye. His last appearance for Milan, and his last game as an active player, was a 2-0 win against Fiorentina on 31 May 2009 in the last match of the Series A season. This win meant Milan finished in third place and qualified for the following season's Champions League. Maldini was once again given a standing ovation by the fans. As they had previously done with Franco Baresi's number 6 shirt, Milan retired Maldini's number 3 shirt, but stated that it will be bequeathed to one of his sons if one of them were to make the club's senior team. On 28 August 2009 in Monte Carlo, Paolo Maldini was Awarded a prize for his career by UEFA during the draw for the group stage of the 2009-10 Champions League. On 17 November 2009, Spanish sports newspaper Marca awarded Maldini the "Marca Leyenda" prize for his career and achievements.

when did he retire?

Answer with quotes:
On 18 April 2009, Maldini announced that he would be retiring at the end of the 2008-09 season.