Problem: Background: The Twilight Sad are a Scottish post-punk/indie rock band, comprising James Graham (vocals) and Andy MacFarlane (guitar). The band are currently signed to Fat Cat Records and have released four full-length albums, as well as several EPs and singles. Their 2007 debut album, Fourteen Autumns & Fifteen Winters, drew widespread acclaim from critics, who noted Graham's thick Scottish accent and MacFarlane's dense sonic walls of shoegazing guitar and wheezing accordion. The Twilight Sad's notoriously loud live performances have been described as "completely ear-splitting," and the band toured for the album across Europe and the United States throughout 2007 and 2008.
Context: Guitarist Andy MacFarlane composed the song "The Weath-er Is Bad" for Semiconductor Films' short film Brilliant Noise, a film pieced together from archive NASA footage of the sun's surface. The song was later included on the Killed My Parents and Hit the Road compilation. MacFarlane also provided a remix of Errors' song "Bridge or Cloud?" in January 2010, which was posted as a free download on NME's website. In February 2011, MacFarlane provided a remix of Fat Cat labelmate Ensemble's track "Before Night", which was posted as a "song of the day" on The Line of Best Fit's website.  Singer James Graham appears on the live album Quietly Now! by fellow Scottish band Frightened Rabbit, providing additional vocals on the track "Keep Yourself Warm". In 2011, Graham appeared as a guest vocalist and songwriter on the album First Edition by The Fruit Tree Foundation, a supergroup collaboration of Scottish musicians headed by Rod Jones and Emma Pollock for the benefit of the Mental Health Foundation for Scotland. In 2015, Graham participated in Aidan Moffat's backing band during Moffat's UK tour performing Scottish folk songs. The tour was part of the documentary film Where You're Meant to Be, which was released the following year. In 2016, Graham featured as a guest vocalist with supergroup Minor Victories on their song "Scattered Ashes (Song for Richard)". The track appeared on Minor Victories' self-titled album. In 2017, Graham co-founded the band Out Lines, with fellow musicians Kathryn Joseph and Marcus Mackay. Out Lines's debut album, Conflats, was released on 27 October 2017 via Rock Action Records, Mogwai's label, where Graham also works outside his Twilight Sad duties.  Under the name Orzelda, former bassist Craig Orzel released a solo album, The Wee Shop Is Filled with Delights, in 2008, with the EPs My Dress Up and Spiders following in 2010.
Question: did he collaborate with anyone else?
Answer: Graham participated in Aidan Moffat's backing band during Moffat's UK tour

Problem: Background: Umar was born in Mecca to the Banu Adi clan, which was responsible for arbitration among the tribes. His father was Khattab ibn Nufayl and his mother was Hantama bint Hisham, from the tribe of Banu Makhzum. In his youth he used to tend to his father's camels in the plains near Mecca. His merchant father was famed for his intelligence among his tribe.
Context: Umar attended the event of Ghadir Khumm, which took place a few months before Muhammad passed away. According to both Shia and Sunni sources, he was among the many who pledged allegiance to Ali at the event.  In Medina, after the Farewell Pilgrimage and the event of Ghadir Khumm, Muhammad ordered an army under the command of Usama bin Zayd. He commanded all the companions, except for his family, to go with Usama to Syria to avenge the Muslims' defeat at the Battle of Mu'tah. Muhammad gave Usama the banner of Islam on the 18th day of the Islamic month of Safar in the year 11 A.H. Abu Bakr and Umar were among those that Muhammad commanded to join Usama's army.  However, Abu Bakr and Umar resisted going under the command of Usama because they thought that he, who was 18 or 20 at the time, was too young to lead an army, despite Muhammad's teachings that age and standing in society did not necessarily correspond to being a good general.  In response to these worries, the Prophet said: "O Arabs! You are miserable because I have appointed Usama as your general, and you are raising questions if he is qualified to lead you in war. I know you are the same people who had raised the same question about his father. By God, Usama is qualified to be your general just as his father was qualified to be a general. Now obey his orders and go." Whenever Muhammad felt any relief from his fatal sickness, he would inquire as to whether Usama's army had left for Syria yet, and would continue urging his companions to leave for Syria. Muhammad even said, "Usama's army must leave at once. May Allah curse those men who do not go with him." However, while a few companions were ready to join Usama's army, many other companions, including Abu Bakr and Umar, disobeyed Muhammad's orders. It is also noted that this was the only battle expedition where Muhammad urged his companions to go the battle no matter what; for other battles, if someone was unable to go to the fight, Muhammad would let them stay at home.
Question: Are there any other interesting aspects about this article?
Answer:
Abu Bakr and Umar resisted going under the command of Usama because they thought that he, who was 18 or 20 at the time, was too young to