Question: Jason Scheff and Kyosuke Himuro are both in what profession?

Context paragraphs:
Chauncy (album): Chauncy is the 1996 debut solo album by singer/songwriter/bassist Jason Scheff.  Scheff is probably best known as a member of the band Chicago, where he has been the bassist and a lead singer since 1985.  It also featured the only officially available recording of his 1993 co-composition "Mah Jongg" prior to the release of the original Chicago recording in 2008.

Boøwy: 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.

Kyosuke Himuro: 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.

Neo Fascio: Neo Fascio is the second album by Japanese singer Kyosuke Himuro.

Higher Self (album): Higher Self is the third album by Japanese singer Kyosuke Himuro.

Flowers for Algernon (album): 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.

Jason Scheff: Jason Randolph Scheff (born April 16, 1962, in San Diego) is an American bassist, singer, and songwriter.  From 1985 to 2016 he was the bassist and singer for the veteran pop-rock band Chicago.

Yukinojo Mori: Masakazu Mori (Japanese: 森 正和 ) , better known by his stage name , is a Japanese lyricist, composer and poet.  He has written over 2,000 songs for numerous artists such as Kyosuke Himuro, Takuro Yoshida and Junichi Inagaki and theme songs for anime series including "Dragon Ball Z".  His younger brother is Hideharu Mori, keyboardist of the rock band Picasso.

If She Would Have Been Faithful...: "If She Would Have Been Faithful... " is a song written by Steve Kipner and Randy Goodrum for the group Chicago and recorded for their album "Chicago 18" (1986), with Jason Scheff singing lead vocals.  The third single released from that album, it was a Top 10 adult contemporary hit and also reached #17 on the U.S. "Billboard" Hot 100 chart.

What Kind of Man Would I Be?: "What Kind of Man Would I Be?"  is a song written by Jason Scheff, Chas Sandford and Bobby Caldwell and recorded by the band Chicago for their 1988 album "Chicago 19" and 1989 album "Greatest Hits 1982–1989".  Scheff sang the lead vocals.

Supporting paragraphs: Jason Scheff Kyosuke Himuro
Answer: singer-songwriter