Problem: Samuel Cook (January 22, 1931 - December 11, 1964), known professionally as Sam Cooke, was an American singer, songwriter, and entrepreneur. Influential as both a singer and composer, he is commonly known as the King of Soul for his distinctive vocals and importance within popular music. He began singing as a child and joined The Soul Stirrers before moving to a solo career where he scored a string of hit songs like "You Send Me", "Wonderful World", "Chain Gang", and "Twistin' the Night Away".

The first funeral service for Cooke was held on December 18, 1964, at A. R. Leak Funeral Home in Chicago; 200,000 fans lined up for more than four city blocks to view his body. Afterward, his body was flown back to Los Angeles for a second service, at the Mount Sinai Baptist Church on December 19, which included a much-heralded performance of "The Angels Keep Watching Over Me" by Ray Charles, who stood in for grief-stricken Bessie Griffin. Cooke was interred in the Garden of Honor, Lot 5728, Space 1, at Forest Lawn Memorial Park Cemetery in Glendale, California. Two singles and an album were released in the month after his death. One of the singles, "Shake", reached the top ten of both the pop and R&B charts. The B-side, "A Change Is Gonna Come", is considered a classic protest song from the era of the Civil Rights Movement . It was a top 40 pop hit and a top 10 R&B hit. The album, also titled Shake, reached the number one spot for R&B albums. After Cooke's death, his widow, Barbara, married Bobby Womack. Cooke's daughter, Linda, later married Womack's brother, Cecil. Bertha Franklin said she received numerous death threats after shooting Cooke. She left her position at the Hacienda Motel and did not publicly disclose where she had moved. After being cleared by the coroner's jury, she sued Cooke's estate, citing physical injuries and mental anguish suffered as a result of Cooke's attack. Her lawsuit sought US$200,000 in compensatory and punitive damages. Barbara Womack countersued Franklin on behalf of the estate, seeking $7,000 in damages to cover Cooke's funeral expenses. Elisa Boyer provided testimony in support of Franklin in the case. In 1967, a jury ruled in favor of Franklin on both counts, awarding her $30,000 in damages.

Did his children or any other singers do anything special following his death?

Answer with quotes: a much-heralded performance of "The Angels Keep Watching Over Me" by Ray Charles,

Problem: Atsuko Maeda (Qian Tian Dun Zi , Maeda Atsuko, born July 10, 1991, in Ichikawa, Chiba) is a Japanese singer and actress known for her work in the Japanese idol group AKB48. Maeda was one of the most prominent members in the group, and placed first among all AKB48 and sister group candidates in the group's general 2009 and 2011 elections, and second in the 2010 election. She also appeared on many of its album covers. On March 25, 2012, she announced her graduation from AKB48; it was held on August 27.

At age 14, Maeda became a member of AKB48's first group, Team A, which composed of 24 girls and debuted on December 8, 2005. In 2009, Maeda won the first edition of AKB48's annual general elections, which are described as a popularity contest. As a result, she was the headlined performer for the group's 13th single, "Iiwake Maybe". The following year, she placed second overall, but still had a significant choreography position in the lineup for "Heavy Rotation". Later that year, AKB48 employed a rock-paper-scissors tournament to determine the top spot of AKB48's 19th major single "Chance no Junban". Maeda placed 15th, which secured her a spot on title track. Maeda would also win the group's third general election held in 2011. Maeda was one of the members who sang on every AKB48 title track since the group's inception. Her streak of A-side appearances ended in 2011, when she lost to Team K captain Sayaka Akimoto at a rock-paper-scissors tournament which determined the featured members for the group's 24th single "Ue kara Mariko". On March 25, 2012, during an AKB48 Concert at the Saitama Super Arena, Maeda announced that she would leave the group. This caused a large buzz in the Japanese news, and spawned a rumor (later proved false) that a student from University of Tokyo had committed suicide over the announcement. AKB48 later announced that Maeda would leave after the Tokyo Dome concerts; For her final performance, there were 229,096 requests filed for seat tickets. Her farewell performance and ceremony occurred on August 27 at the AKB48 theater, and was streamed live on YouTube.

How long did Maeda last in this group?

Answer with quotes:
On March 25, 2012, during an AKB48 Concert at the Saitama Super Arena, Maeda announced that she would leave the group.