Background: Philip Glass (born January 31, 1937) is an American composer. He is widely regarded as one of the most influential musicians of the late 20th century. Glass's work has been described as minimal music, having similar qualities to other "minimalist" composers such as La Monte Young, Steve Reich, and Terry Riley. However, Glass has instead described himself as a composer of "music with repetitive structures", which he has helped evolve stylistically.
Context: In the late 1990s and early 2000s, Glass's lyrical and romantic styles peaked with a variety of projects: operas, theatre and film scores (Martin Scorsese's Kundun, 1997, Godfrey Reggio's Naqoyqatsi, 2002, and Stephen Daldry's The Hours, 2002), a series of five concerts, and three symphonies centered on orchestra-singer and orchestra-chorus interplay. Two symphonies, Symphony No. 5 "Choral" (1999) and Symphony No. 7 "Toltec" (2004), and the song cycle Songs of Milarepa (1997) have a meditative theme. The operatic Symphony No. 6 Plutonian Ode (2002) for soprano and orchestra was commissioned by the Brucknerhaus, Linz, and Carnegie Hall in celebration of Glass's sixty-fifth birthday, and developed from Glass's collaboration with Allen Ginsberg (poet, piano - Ginsberg, Glass), based on his poem of the same name. Besides writing for the concert hall, Glass continued his ongoing operatic series with adaptions from literary texts: The Marriages of Zones 3, 4 and 5 ([1997] story-libretto by Doris Lessing), In the Penal Colony (2000, after the story by Franz Kafka), and the chamber opera The Sound of a Voice (2003, with David Henry Hwang), which features the Pipa, performed by Wu Man at its premiere. Glass also collaborated again with the co-author of Einstein on the Beach, Robert Wilson, on Monsters of Grace (1998), and created a biographic opera on the life of astronomer Galileo Galilei (2001). In the early 2000s, Glass started a series of five concerti with the Tirol Concerto for Piano and Orchestra (2000, premiered by Dennis Russell Davies as conductor and soloist), and the Concerto Fantasy for Two Timpanists and Orchestra (2000, for the timpanist Jonathan Haas). The Concerto for Cello and Orchestra (2001) had its premiere performance in Beijing, featuring cellist Julian Lloyd Webber; it was composed in celebration of his fiftieth birthday. These concertos were followed by the concise and rigorously neo-baroque Concerto for Harpsichord and Orchestra (2002), demonstrating in its transparent, chamber orchestral textures Glass's classical technique, evocative in the "improvisatory chords" of its beginning a toccata of Froberger or Frescobaldi, and 18th century music. Two years later, the concerti series continued with Piano Concerto No. 2: After Lewis and Clark (2004), composed for the pianist Paul Barnes. The concerto celebrates the pioneers' trek across North America, and the second movement features a duet for piano and Native American flute. With the chamber opera The Sound of a Voice, Glass's Piano Concerto No. 2 might be regarded as bridging his traditional compositions and his more popular excursions to World Music, also found in Orion (also composed in 2004).
Question: Who else did he colaborate with?
Answer:

Background: Girls' Generation (Hangul: sonyeosidae; RR: Sonyeo Sidae), also known as SNSD, is a South Korean girl group formed by S.M. Entertainment. The group is composed of eight members: Taeyeon, Sunny, Tiffany, Hyoyeon, Yuri, Sooyoung, Yoona and Seohyun. Originally a nine-piece group, Jessica later departed from the group in September 2014. Girls' Generation debuted in 2007 with their Korean eponymous debut album.
Context: Girls' Generation announced the single "Catch Me If You Can", their first release as an eight-member group, in March 2015. It was recorded in both Korean and Japanese; the Korean version was released worldwide on April 10, while the Japanese version was released on April 22, 2015. It peaked at number nineteen on the Gaon Digital Chart and number eight on the Oricon Singles Chart. Girls' Generation revealed the cover artwork of their fifth Korean studio album Lion Heart on August 12, 2015. It was subsequently released by S.M. Entertainment on August 19, 2015. The album peaked atop the Gaon Album Chart, and at number eleven on the Oricon Albums Chart. Lion Heart was the thirteenth best-selling album of 2015 in South Korea, with sales figures standing at 145,044 units. Lion Heart produced three singles--the first being "Party", which was released in July 2015. It peaked atop the Gaon Digital Chart, at number ten on the Japan Hot 100, and number four on Billboard's World Digital Songs. Following the release of "Party", Girls' Generation appeared on the Billboard Social 50 at number forty-four on August 1, 2015. The following week, the group's position on the chart rose to number twenty-two. The follow-up singles "Lion Heart" and "You Think" were made available in conjunction with the release of the album. They charted at numbers four and thirty on the Gaon Digital Chart, respectively. To promote the album, the group starred in a South Korean reality television program titled Channel Girls' Generation. They further embarked on their fourth concert tour, Girls' Generation's Phantasia, which started on November 21, 2015 in Seoul. With this achievement, Girls' Generation became the first South Korean girl group to hold a fourth concert tour. The group also concurrently embarked on their 4th Japan Tour, which commenced on December 12, 2015 at Nagoya. By year-end, the Gaon Music Chart announced that Girls' Generation was the most successful girl group of South Korea for 2015. With the release of their Lion Heart album along with two other albums, by subgroup TTS and member Taeyeon, they together sold over 398,000 physical copies. The group was on a hiatus for the most part of 2016. However, to commemorate the group's ninth debut anniversary, in August 2016, a single titled "Sailing (0805)" was released. The lyrics were written by member Sooyoung, highlighting the relationship between the group and their fans.
Question: Don't know why I said 2002 earlier. (sorry) What happened in 2016?
Answer:
The group was on a hiatus for the most part of 2016. However, to commemorate the group's ninth debut anniversary, in August 2016, a single titled "Sailing (0805)" was released.