Bryan Keith "Dexter" Holland (born December 29, 1965) is an American musician, best known as the singer, rhythm guitarist, and primary songwriter for the punk rock band The Offspring.
The Offspring is an American punk rock band formed in Garden Grove, California in 1984.
 The band originally comprised vocalist Doug Thompson, guitarist Dexter Holland, bassist Greg K. and drummer Jim Benton, although Thompson and Benton left early on.
 After Holland took over vocal duties and James Lilja joined on drums, the group briefly added Marcus Parrish as a second guitarist, before Kevin "Noodles" Wasserman replaced him in 1985.
 After performing on the band's debut single "I'll Be Waiting" and co-writing the song "Beheaded", Lilja left the band in 1987 to be replaced by Ron Welty.
 In 1994, Chris "X-13" Higgins joined as a touring guitarist, keyboardist and percussionist.
"Days Go By" is a pop punk song by the American punk rock band The Offspring.
 It is featured as the third track on the band's ninth studio album of the same name and was released as its first single.
 The song was premiered on the Los Angeles, California rock station KROQ on April 27, 2012.
 "Days Go By" was released to radio on May 1, 2012.
 "Days Go By" was written by frontman/lyricist Dexter Holland.
 It peaked at No. 7 on US Alternative Songs.
Celebrate - The Night of the Warlock is an EP by German female hard rock singer Doro Pesch, released in 2008 through AFM Records.
 The EP preceded of a few months the album "Fear No Evil" and includes three versions of the song "Celebrate".
 In the single version of the song the chorus is provided by a group of Doro fans, while the other two contain in the chorus the vocal performances of Saxon's frontman Biff Byford and of many female heavy metal singers.
 The song itself is a new collaboration of Doro with the old Warlock producer Joey Balin and is meant to celebrate the 25th anniversary of Doro's career.
"Come Out and Play" is a song by the Californian punk rock group The Offspring.
 It is the seventh track on their third album "Smash" (1994) and was released as the first single from that album.
 Written by frontman Dexter Holland, the song was the second single to be released by the band, after "I'll Be Waiting" (1986).
 It is considered to be The Offspring's breakthrough song, as it received widespread radio play and reached number one on the "Billboard" Modern Rock Tracks chart, bringing both the band and the punk rock genre to widespread attention.
 Inspiration for the "keep 'em separated" lyric came from Dexter Holland's experience in a laboratory cooling Erlenmeyer flasks full of hot liquids.
She is the daughter of Dexter Holland, lead singer of the American punk rock band The Offspring.
The Offspring is an American rock band from Garden Grove, California, formed in 1984.
 Originally formed under the name Manic Subsidal, the band has consisted of lead vocalist and rhythm guitarist Dexter Holland, bassist Greg K., lead guitarist Kevin "Noodles" Wasserman and drummer Pete Parada since 2007.
 While Holland, Greg K., and Noodles have been constant members since the band was formed, the Offspring has gone through a number of drummers.
 Their longest-serving drummer was Ron Welty, who had been a member of The Offspring for 16 years; he was replaced by Atom Willard in 2003, and then four years later by Parada.
 The band is often credited—alongside fellow California punk bands Green Day, Bad Religion, NOFX, Pennywise and Rancid—for reviving mainstream interest in punk rock in the 1990s.
 They have sold over 40 million records worldwide, being considered one of the best-selling punk rock bands of all time.
Friendly People is the second album by the Huntington Beach, California punk rock band Guttermouth, released in 1994 by Nitro Records.
 It was the first release for the label, which was founded by Dexter Holland of The Offspring.
 The album continued the band's style of fast, abrasive punk rock with tongue-in-cheek humor and sarcastic lyrics.
Nitro Records is an American independent record label, created and operated by Dexter Holland (from 1994 to 2013) (lead singer and founder of The Offspring) and fellow Offspring bassist Greg K.
 They started the label in 1994.
 Nitro is famous for being an incubator for punk rock artists who have subsequently become successful, most notably AFI.
 The label has also released albums from classic punk bands, including The Damned and T.S.O.L.
Dorothee Pesch (born 3 June 1964), popularly known as Doro Pesch or Doro, is a German heavy metal singer-songwriter, formerly front-woman of the heavy metal band Warlock.
 The name Doro has also been associated with the touring band accompanying the singer, whose members have continuously changed in more than twenty years of uninterrupted activity, the most stable presences being those of bassist Nick Douglas and drummer Johnny Dee.

Question: Are Doro and Dexter Holland both singers?
Answer: yes