Question: Are Nick Gilder and Terri Nunn both singers?

Context paragraphs:
The Warrior (song): "The Warrior" is a song by American rock band Scandal, from the album "Warrior".  The song was written by Holly Knight ("Love Is a Battlefield") and Nick Gilder ("Hot Child in the City").  The song went to number one in Canada and number seven in the United States, as well as number one on the Mainstream Rock chart in the US, in addition to winning a BMI Airplay Award in 1984.  The music video of the song depicts the apocalypse in a warehouse.

Nick Gilder: Nicholas George "Nick" Gilder (born 21 December 1951), is an English-Canadian musician who first came to prominence as the frontman for the glam rock band Sweeney Todd.  He later had a successful solo career as a singer/songwriter.

Stairways (album): Stairways by Nick Gilder was released in 1997 on the Spinner Music Group Inc./Gilder Records labels.

Sweeney Todd (band): Sweeney Todd is a Canadian glam rock band formed in Vancouver in 1975.  The band's original lead vocalist Nick Gilder left the band to start a solo career, and was replaced by a young Bryan Adams, who later enjoyed international success as a solo artist.

Nick Gilder (album): Nick Gilder by Nick Gilder was released in 1985 on the RCA Records label.

Sex (I'm A...): "Sex (I'm A.. .)"  is a song by the American band Berlin from their second album "Pleasure Victim".  The song was co-written by group members John Crawford, Terri Nunn and David Diamond and sung as a duet by Crawford and Nunn.

Sweeney Todd (album): Sweeney Todd is the first album of the Canadian glam rock band Sweeney Todd.  The single "Roxy Roller" reached #1 in the "RPM" national singles survey on June 26, 1976, and held that position for three weeks.  Singer Nick Gilder and guitarist Jim McCulloch later went on to solo careers.  They have both since returned to the band.

Hot Child in the City: "Hot Child in the City" is a song by English-Canadian musician Nick Gilder.  It was released in June 1978 as a single from the album "City Nights".  It went to #1 both in Canada (October 14, 1978) and in the United States (October 28, 1978).  It was not his first #1 single: as the lead singer of Sweeney Todd, he had hit #1 in Canada on June 26, 1976 (in the "RPM" listing) with the single "Roxy Roller", which remained at the top for three weeks.  He won 2 Juno Awards in Canada and a People's Choice Award in the US.  According to "The Billboard Book of Number 1 Hits "it held the record for taking the longest amount of time to reach #1.  The song became a platinum record.

Metro Jets (song): Metro Jets is a song written by Nick Gilder and James McCulloch, and recorded by Nick Gilder in 1979.

Terri Nunn: Terri Kathleen Nunn (born June 26, 1961), is an American singer and actress.  She is best known as the lead vocalist of the new wave/synthpop band Berlin.

Supporting paragraphs: Nick Gilder Terri Nunn
Answer: yes