Question: Which person has been in the music business for longer, Daron Malakian or John Garabedian?

Context articles: Scars on Broadway
System of a Down discography
Rebellion (song)
Daron Malakian
Scars on Broadway (album)
System of a Down
Open House Party
XY TV
Vartan Malakian
John Garabedian

Scars on Broadway was an American rock band, founded by System of a Down member Daron Malakian.
 The band's eponymous debut album was released on July 29, 2008.
System of a Down is an American rock band formed by musicians of Armenian origin: vocalist Serj Tankian, guitarist Daron Malakian, bassist Shavo Odadjian, and drummer John Dolmayan in the mid-1990s.
 They have released five studio albums, 16 singles, and 11 music videos. By the end of 1997, the group had signed to American Recordings, then distributed as Columbia Records.
 The following year, they released their eponymous debut album, which peaked at #124 on the United States' "Billboard" 200 and #103 on the United Kingdom's UK Albums Chart; it was certified platinum two years later by the Recording Industry Association of America (RIAA), and gold by Canadian Recording Industry Association (CRIA).
 Their eponymous debut album produced a single for the song "Sugar", which reached the top 30 on the "Billboard" mainstream rock songs and alternative songs charts.
 Their follow-up album, "Toxicity" (2001), topped the US and Canadian charts, and also reached the top 10 in Australia, Finland, and New Zealand.
 The album was certified triple platinum in its home country, and triple platinum in Australia by the Australian Recording Industry Association (ARIA), as well as double platinum by CRIA in Canada.
 "Toxicity" produced singles for the title track, "Chop Suey!
", and "Aerials".
 The last of these peaked at number one on the "Billboard" Mainstream Rock Songs and Alternative Songs charts.
"Rebellion" is a song by American rock band Linkin Park.
 The song was originally recorded by the band for their sixth studio album, "The Hunting Party", where it appears as the eighth track on the album.
 The song features Armenian-American multi-instrumentalist Daron Malakian from rock band System of a Down, who plays additional guitar on the track.
 The track was released as second promotional single from "The Hunting Party" on June 4, 2014 and was later released as the fourth official single from the album on October 13, 2014, and was included on American rock radio.
Daron Vartan Malakian (Armenian: Տարօն/Տարոն Վարդան Մալաքեան, born July 18, 1975) is an Armenian–American singer-songwriter, multi-instrumentalist, and record producer.
 He is best known as the guitarist, songwriter and second vocalist of the rock band System of a Down and as the lead vocalist, lead guitarist and songwriter of the band Scars on Broadway.
 Like the rest of the Hollywood-based band System of a Down, he is of Armenian ancestry, but he is the only member to have been born in the United States.
 Daron Malakian is known for his distinctive playing and is ranked 40th in Loudwire's list of "Top 50 Hard Rock + Metal Guitarists Of All Time" and #11 in MusicRadar's poll, "The 20 Greatest Metal Guitarists Ever".
 He is placed 30th in Guitar World's List of The 100 Greatest Heavy Metal Guitarists of All Time.
Scars on Broadway is the only studio album by Scars on Broadway, a band consisting of System of a Down members Daron Malakian and John Dolmayan.
 The album contains fifteen tracks, all written by Malakian.
System of a Down, sometimes shortened to System and abbreviated as SOAD, is an Armenian-American heavy metal band from Glendale, California, formed in 1994.
 The band currently consists of Serj Tankian (lead vocals, keyboards), Daron Malakian (vocals, guitar), Shavo Odadjian (bass, backing vocals) and John Dolmayan (drums).
Open House Party (most of the time, shortened to OHP) is an American radio show hosted on Saturday and Sunday nights by Kannon, who also hosts the afternoon drive slot on 102.9 Now.
 The show promotes itself as "the Biggest Party on the Planet".
 It focuses on playing contemporary hit radio (CHR) music, also known as Top 40.
 The show differentiates itself from most Top 40 because it plays a high rotation of remixes.
 Unlike most radio stations or programs, every song played on OHP is by a listener request, rather than computer systems automatically inserting songs that may not even be popular anyways.
 The show started in 1987, and was hosted by John Garabedian from September 1987 to January 2017.
 Garabedian created the show, and hosted both Saturday and Sunday nights for a long period of time.
 Open House Party is broadcast on more than 50 stations around the world.
It launched in December 2003 and distribution was limited to select cable companies.
 As of May 31, 2006, XY.tv has ceased operations, and is no longer broadcasting.
 It was wholly owned by American radio personality John Garabedian.
Vartan Malakian (Armenian: Վարդան Մալաքյան, born February 14, 1947) is an artist and painter.
 He is the father of Daron Malakian, guitarist co-founder of System of a Down and Scars on Broadway.
 He was born on February 14, 1947 in Mosul, Iraq.
John H. Garabedian is an American radio personality and disc jockey born on December 20, 1941 (age 75).
 He is best known as the creator and former long-time host of "Open House Party".
 He has been involved in Massachusetts radio and television stations for over fifty years.
 Garabedian currently owns three homes, all in New England: one in Southborough, Massachusetts, another on Cape Cod, and a cabin-like home in Cabot, Vermont.