Question: What do Jeff Scott Soto and Kevin Max have in common?
Context: Ignorance is the result of Jeff Scott Soto's collaboration with Dave Fraser and Neil Goldberg. Marcus Nand (born Merseyside, England) is a guitarist, singer-songwriter, producer, and sound engineer best known for his work with flamenco guitar.  After learning rock, blues, and flamenco in Spain in his youth, he has been based in Los Angeles since the 1990s.  A past guitarist for Los Angeles metal band Freak of Nature, he later formed the world music and rock band Ziroq with bassist Carmine Rojas.  Ziroq's debut album was named "Best Mix: Non-Orchestral" at the 2002 Surround Music Awards.  Nand also works on various solo projects.  As a session guitarist, he has contributed to albums such as "Situation Dangerous" by Bozzio Levin Stevens, "Essential Ballads" by Jeff Scott Soto, and various compilations. Jeff Scott Soto (born November 4, 1965) is an American rock singer of Puerto Rican descent.  He is best known for being the vocalist on Yngwie Malmsteen's first two albums, and the lead vocalist for Journey on their 2006–2007 tours.  He also had a long tenure as the frontman of hard rock band Talisman.  Currently he works as solo artist, with his self-named band SOTO and as the vocalist of supergroups W.E.T., Sons of Apollo and Trans Siberian Orchestra. Believe in Me is a 2006 EP by Jeff Scott Soto and the only EP released by Frontiers Records.  Believe in Me name was derived from a song on Soto's "Lost in the Translation" album.  Four other cuts were taken from the "Essential Ballads" CD and were issued in the EP as a sneak preview.  "Believe in Me" was considered to be a single.  but Jeff Scott Soto instead released Believe in Me as an EP. Inspiration is the ninth studio album by guitarist Yngwie Malmsteen, released on 14 October 1996.  It is a tribute album consisting entirely of covers of various bands who influenced Malmsteen.  Featured on vocals are Jeff Scott Soto, Mark Boals and Joe Lynn Turner, all of whom performed on Malmsteen's first four studio albums. Jorge Salán (born April 4, 1982) is a Spanish rock lead guitarist, singer, producer and songwriter.  He is most well known for being the lead guitar for the metal rock solo singer Jeff Scott Soto (leading voice of Journey, Yngwie Malmsteen) and the Jeff Scott Soto Band (now SOTO) from 2009 till today, the lead guitar on Robin Beck's European Tour 2013, and for having collaborated with a long list of legendary rock musicians such as Fiona Flanagan or bass guitar player Bob Daisley. Perception of Reality was the 4th studio album by hard rock band Takara released in 2001 on Lion Music & Saraya Recordings.  It is their first album without vocalist Jeff Scott Soto. Kevin Max (born August 17, 1967) is an American singer, songwriter, and poet.  He is best known for being a member of the Christian pop group DC Talk.  As a solo artist following the 2001 dissolution of DC Talk, he has recorded eight full-length studio albums, one Christmas album, and seven EPs, with one releasing in July.  From 2012 until 2014, he was the lead singer of the band Audio Adrenaline. Essential Ballads is a compilation album by Jeff Scott Soto.  It consists ballads from Soto's solo albums. Live at the Gods is a live album by Hardline which was released on DVD and CD in 2003.  It was recorded at the Gods Festival in Bradford, England on 2 June 2002, where Hardline was the headliner for this festival.  The concert was an all day festival which featured eight other bands, such as Jeff Scott Soto, whom marked his first live performance as a solo artist, and Harem Scarem.  Hardline was the last band to play at 2 a.m. and during the first couple of songs on the show, the band was suffering from technical and sound problems on stage.  The microphones and equipment were worn out after being on all day.  This also affected the back up singer's microphones the most, causing them to not hear their own voices over the loud music.  While performing the ballad "Face the Night", an angry Johnny Gioeli storms off stage to talk to the Tech Staff to fix the microphones, but keeps his cool and comes back on stage to perform the rest of the show.  Three back up singers were used (two female, one male) at the concert.  The female backup singers, Gudi Laos and Katja Kutz also toured with Johnny's other band – Axel Rudi Pell – on their 2002 Shadow Zone tour.  The line up for the band members in the show is the same as Hardline's second album, with the exception of bass player Christopher Maloney's replacement by producer Bob Burch.
Answer: singer