Question: Are Eric Dover and Soyou both singers?

Context articles: Soyou
Rain (Soyou and Baekhyun song)
Eric Dover
Ah Via Musicom
Eric Johnson
Eric Puttock
Cliffs of Dover (composition)
Slash's Snakepit
Eric Sessler
Some (song)

Kang Ji-hyun (Hangul: 강지현 ; born February 12, 1992), better known by her stage name Soyou (소유 ), is a South Korean singer.
 She is best known as a former member of the South Korean girl group Sistar under Starship Entertainment.
"Rain" (Korean: 비가와 ) is a song by South Korean singers Soyou and Baekhyun, members of K-pop groups Sistar and EXO respectively.
 It was released on February 14, 2017 by Starship Entertainment.
Eric Dover (born January 19, 1967 in Jasper, Alabama) is an American musician, guitarist and singer, most notably with Jellyfish, Slash's Snakepit, Imperial Drag and Alice Cooper.
Ah Via Musicom is the third studio album by guitarist Eric Johnson, released in 1990 through Capitol Records.
 The album reached No. 67 on the U.S. "Billboard" 200 and remained on that chart for 60 weeks.
 All four singles charted on "Billboard"'s Mainstream Rock chart, with three of them being top 10 hits: "High Landrons" at No. 31, "Righteous" at No. 8, "Cliffs of Dover" at No. 5 and "Trademark" at No. 7.
 "Cliffs of Dover" went on to win the Award for Best Rock Instrumental Performance at the 1992 Grammys.
Eric Johnson (born August 17, 1954) is an American guitarist.
 His 1990 album "Ah Via Musicom" was certified platinum by the RIAA and the single "Cliffs of Dover" won the Grammy Award for Best Rock Instrumental Performance.
Eric Clarence Puttock (2 March 1900 – 14 December 1969) was an English cricketer.
 Puttock's batting style is unknown.
 He was born at Billingshurst, Sussex and was educated at Dover College.
"Cliffs of Dover" is an instrumental composition by guitarist Eric Johnson which appeared on his 1990 "Ah Via Musicom" album.
 The album version of the song is composed in the key of G major, the song was played with a Gibson ES-335 (as well as a Fender Stratocaster) through a B.K. Butler Tube Driver and an Echoplex plugged into a 100-watt Marshall amplifier.
 The song takes its name from the White Cliffs of Dover, an extensive and visually stunning chalk outcrop that runs along the southeast coast of England.
 It is also featured on the video game "Guitar Hero III" and is available as DLC for the game "Rocksmith".
Slash's Snakepit was an American rock supergroup from Los Angeles, California, formed by Guns N' Roses guitarist Slash in 1993.
 Though often described as a solo or side project, Slash stated that Snakepit was a band with equal contributions by all members.
 The first lineup of the band consisted of Slash, two of his Guns N' Roses bandmates— drummer Matt Sorum and guitarist Gilby Clarke— as well as Alice in Chains bassist Mike Inez and former Jellyfish live guitarist Eric Dover on lead vocals.
Eric Sessler is an American composer and educator.
 Among his collaborations are works written for Grammy Award winner Jason Vieaux; Philadelphia Orchestra principal flutist Jeffrey Khaner; organist Alan Morrison; the Dover Quartet; and the flute & guitar duo of Bonita Boyd & Nicholas Goluses.
"Some" (Hangul: 썸 ) is a song by South Korean singers Soyou and Junggigo, featuring Lil Boi of Geeks.
 It was released online as a digital single on February 7, 2014 through Starship Entertainment.