Flowers for Algernon is the first solo album by Japanese singer Kyosuke Himuro.
 Japanese rock group Boøwy, to which he once belonged, disbanded and this album was released as his solo debut five months later.
Boøwy (pronounced: bóui, stylized as BOØWY) was a Japanese rock band formed in Takasaki, Gunma in 1981.
 The best-known lineup of Kyosuke Himuro (vocals), Tomoyasu Hotei (guitar), Tsunematsu Matsui (bass) and Makoto Takahashi (drums) reached legendary status in Japan during the 1980s.
Beyond was a Hong Kong rock band that formed in 1983.
 The band became prominent in Hong Kong, Taiwan, Japan, Singapore, Malaysia, Mainland China and Overseas Chinese communities.
 The band is widely considered as the most successful and influential Cantonese music group from Hong Kong.
 In 1993, the founder of the group Wong Ka Kui died due to an accident while filming a show at Fuji Television in Tokyo.
 Beyond continued to perform and record after Wong Ka Kui's death.
 In 2005, the remaining members Paul Wong, Wong Ka Keung and Yip Sai Wing decided to pursue their own solo careers, and Beyond officially disbanded.
Rock and Roll (), is a 1993 album by Hong Kong rock band Beyond.
 This was the last album before the band's late vocalist, Wong Ka Kui died after an accident while filming in Japan.
Kyosuke Himuro (氷室 京介 , Himuro Kyōsuke , born October 7, 1960 in Takasaki, Gunma, Japan) is a Japanese singer-songwriter and musician.
 He was a lead vocalist of the rock band Boøwy from 1981 to 1988.
 After the group disbanded he started a successful solo career, becoming one of Japan's best-selling artists.
 In 2003, HMV Japan ranked Himuro at number 76 on their list of the 100 most important Japanese pop acts.
 He currently lives in Los Angeles, California, where he purchased a palatial residence in Beverly Hills in 2004, which was previously owned by Shaquille O'Neal.
Wong Ka-kui (10 June 1962 – 30 June 1993), was a Hong Kong musician, singer and songwriter, best known as the leader and co-founder of the rock band Beyond, for which he was the lead vocalist, rhythm guitarist and main songwriter.
 He won a lot of awards from 1988 onward.
 The band’s hit songs include "Loving You" (1988), "Truly Love You" (1989), "Amani" (1991), "Boundless Oceans, Vast Skies" (1993) etc.
Wong Ka-keung (born 13 November 1964), also known as Steve Wong, is a Hong Kong musician, singer and songwriter.
 He is best known as bassist for the rock band Beyond, of which his elder brother Wong Ka Kui is the lead vocalist.
Yip Sai-wing (born 19 August 1963) is a Hong Kong musician, best known as the drummer and co-founder of the rock band Beyond, formed with the lead vocalist Wong Ka Kui.
Higher Self is the third album by Japanese singer Kyosuke Himuro.
Neo Fascio is the second album by Japanese singer Kyosuke Himuro.

Question: Were both Wong Ka Kui and Kyosuke Himuro a songwriter?
Answer: yes