Question: Were Karen Carpenter and Mark Mothersbaugh both singers?

Context paragraphs:
General Boy: General Boy is a character created around 1975 by new wave band Devo.  He is usually seen portrayed by Robert Mothersbaugh, Sr., the father of both Devo's lead singer Mark Mothersbaugh and lead guitarist Bob Mothersbaugh.

Devo discography: The discography of Devo, an American new wave band formed in 1973, consists of 25 singles and 9 studio albums.  Devo was founded by Gerald Casale, Bob Lewis and Mark Mothersbaugh.  Devo currently consists of brothers Mark Mothersbaugh (synthesizers, lead vocals) and Bob Mothersbaugh (guitar and vocals), Gerald Casale (bass guitar, keyboards, vocals) and Josh Freese (drums).  The band rose to prominence in the US during the new wave era with their single "Whip It".  The band have released nine studio albums, ten extended plays, twelve compilation albums, six live albums, one soundtrack album and twenty five singles.

If I Had You (The Carpenters song): "If I Had You" is a song recorded by singer Karen Carpenter during her solo sessions in New York with producer Phil Ramone for her subsequently shelved debut solo album.  In 1989 "If I Had You" was released as a Karen Carpenter solo single (featuring Richard Carpenter's remix ending), along with "The Uninvited Guest" (an outtake from the Carpenters album "Made In America"), also credited as a Karen Carpenter solo, as its B-side (in Japan the B-side was "Lovelines", another track from Karen's solo album, also the title track from the 1989 Carpenters "Lovelines" album).  The single was the first single from the Carpenters' album "Lovelines".  As of 2016, this is also the last Carpenters single released to American radio.  The single version has also appeared on numerous Carpenters compilations since its release.  The single reached number 18 on the 'Billboard" Adult Contemporary Chart.

Looking for Love (Karen Carpenter song): "Looking for Love" is a song released under Karen Carpenter's name.  It is regarded to be the first release by what was to become The Carpenters.  The music was written by Karen's brother, Richard Carpenter.  It was recorded in 1966 and released on record label Magic Lamp, a small label with a limited budget.  Even though Richard Carpenter does participate on the recording, it is printed "Karen Carpenter" on the recording contract and record label.

Muzik for Insomniaks, Volume 1 and Volume 2: Muzik for Insomniaks, Volume 1 and Volume 2 is a two-studio album series by Devo's co-founder and lead singer Mark Mothersbaugh.  They were originally released in 1988, the same year as Devo's seventh studio album "Total Devo", on the labels Enigma and Rykodisc.  The albums consisted entirely of instrumentals that were performed in the style of easy listening muzak or new-age music similar to Devo's compilation album "E-Z Listening Disc", released the previous year.  Both of the albums were produced, written, arranged, programmed and performed by Mothersbaugh himself and engineered and mixed by former Devo keyboardist and guitarist Bob Casale.  Mothersbaugh once described the albums as "M. C. Escher meets wallpaper."

Superstar: The Karen Carpenter Story: Superstar: The Karen Carpenter Story is a 1987 American short biographical film directed by Todd Haynes, co-written and co-produced by Haynes and Cynthia Schneider, and follows scenes from the final seventeen years of Karen Carpenter's life.  The film was withdrawn from circulation in 1990 after Haynes lost a copyright infringement lawsuit filed by Karen's brother and musical collaborator, Richard Carpenter.  The film's title is derived from The Carpenters' 1971 hit song, "Superstar".

The Karen Carpenter Story: The Karen Carpenter Story is an American television film about singer Karen Carpenter and the brother-and-sister pop music duo of which she was a part, The Carpenters.  The film aired on CBS on January 1, 1989.  Directed by Joseph Sargent, it starred Cynthia Gibb as Karen Carpenter, and Mitchell Anderson as her brother, Richard Carpenter.

Karen Carpenter: Karen Anne Carpenter (March 2, 1950 – February 4, 1983) was an American singer and drummer, and part of the duo the Carpenters with her brother Richard.  She was critically acclaimed for her contralto vocals, and her drumming was praised by contemporary musicians and peers.

Carpenter Performing Arts Center: The Richard and Karen Carpenter Performing Arts Center in Long Beach, California is a theater that hosts a variety of events, including films, forums, and musical and theatrical performances.  The venue is located on the campus of California State University, Long Beach.  It was built in 1994 and has seating for 1,074.  The stage area was modeled after the New York State Theater of the Arts at Lincoln Center.  The Carpenter Performing Arts Center is named for Richard and Karen Carpenter, alumni of the university and donors to the center.

Mark Mothersbaugh: Mark Allen Mothersbaugh ( ; born May 18, 1950) is an American singer, songwriter, composer, multi-instrumentalist, record producer, author and visual artist.

Supporting paragraphs: Karen Carpenter Mark Mothersbaugh
Answer: yes