Ben Margulies is a songwriter

Songwriter

A songwriter is an individual who writes both the lyrics and music to a song. Someone who solely writes lyrics may be called a lyricist, and someone who only writes music may be called a composer...

 and record producer

Record producer

A record producer is an individual working within the music industry, whose job is to oversee and manage the recording of an artist's music...

. Together, he and Mariah Carey

Mariah Carey

Mariah Carey is an American singer-songwriter, record producer, and actress. She made her recording debut with the release of her eponymous studio album in 1990, under the guidance of Columbia Records executive Tommy Mottola, whom she later married in 1993...

 lobbied record companies with their 5 song demo tape with songs they had co-written and co-produced until Mariah got signed to Sony

Sony

, commonly referred to as Sony, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan and the world's fifth largest media conglomerate measured by revenues....

 in 1988.
Margulies had first met Carey while she was cutting demos of songs she had written with Gavin Christopher. Mariah's brother, Morgan Carey, asked his friend Chris Toland (Margulies' then writing partner) to work on the demo sessions. Toland was not available, so he referred Margulies to help out. Carey and Margulies kept in touch, and eventually got together to write songs, the first of them being the unreleased "Here We Go Round Again".

While the songs Carey and Margulies had written were allowed to be used on Mariah's debut album, the self-titled Mariah Carey

Mariah Carey (album)

Mariah Carey is the self-titled debut studio album by American singer-songwriter Mariah Carey. It was released on June 12, 1990 by Columbia Records. The album contains a range of contemporary genres, and the songs are a mix of slow ballads and dance tracks. Originally, Carey wrote four songs with...

, they were not allowed to produce songs for the most part on the album (Sony did let Carey and Margulies produce one song each).

In 1983, Ben Margulies worked as a drummer, he joined the New York power trio Comateens

Comateens

The Comateens were originally a New Wave duo formed in 1978 in New York City by bassist/vocalist Nic North and guitarist Ramona Jan. Soon after, Lyn Byrd joined on vocals and synthesiser, and the duo became a trio...

, when they were looking for a drummer who could tour with them in support of their Virgin records Pictures on a String album, which had just made the charts. Ben went on to tour with Nicholas North, Lyn Byrd and Oliver North through Switzerland and France, and made an appearance in their music video "Get Off My Case" which had garnered a "Top Album Pick" in Billboard

Billboard (magazine)

Billboard is a weekly American magazine devoted to the music industry, and is one of the oldest trade magazines in the world. It maintains several internationally recognized music charts that track the most popular songs and albums in various categories on a weekly basis...

magazine.

Mariah Carey discography

Mariah Carey

• Vision of Love
  Vision of Love
  "Vision of Love" is a song by American singer-songwriter Mariah Carey. It served as Carey's debut single, the first from her self-titled debut album. Written by Carey and Ben Margulies, "Vision of Love" was released on May 15, 1990 by Columbia Records. After being featured on Carey's demo tape for...
  
   (co-written)
• Love Takes Time
  Love Takes Time
  "Love Takes Time" is a song written by Mariah Carey and Ben Margulies, and produced by Walter Afanasieff for Carey's debut album, Mariah Carey . It was released as the album's second single in the third quarter of 1990...
  
   (co-written)
• Someday
  Someday (Mariah Carey song)
  "Someday" is a song written by Mariah Carey and Ben Margulies, and produced by Ric Wake for Carey's debut album, Mariah Carey . It was released as the album's third single in 1990 and is a jackswing-influenced track. Though it topped the U.S. charts, it was not a huge success elsewhere...
  
  (co-written)
• Vanishing (co-written)
• All In Your Mind (co-written)
• Alone In Love (co-written and co-produced)
• Prisoner (co-written)

Mariah and Ben had written several songs but only 7 of their songs were released on Mariah's debut,
a large number of them still exist to do, but they have never been recorded.

• Unspoken Emotion (co-written)
• Surrender To Me (co-written)
• Now You Got My Heart (co-written)
• No Doubt (co-written)
• Let Me Go (co-written)
• Into The Light (co-written)
• Hypnotized (co-written)
• Here We Go Round Again (co-written)
• Echoes Of Love (co-written)
• Don't Take The World Away (co-written)
• Do You Ever Wonder (co-written)
• Baby (co-written)