Task: Question Answering
Input (English): Passage: "City of Angels" was written by lead vocalist Jared Leto, who also produced the song with Steve Lillywhite. The latter had previously worked with Thirty Seconds to Mars on the production of the band's third studio album, This Is War (2009). The song was engineered by Jamie Reed Schefman and mixed by Serban Ghenea. John Hanes engineered it for mixing at Mixstar Studios in Virginia Beach, Virginia. It was recorded at The International Centre for the Advancement of the Arts and Sciences of Sound in Los Angeles, California and mastered by Howie Weinberg and Dan Gerbarg at Howie Weinberg Mastering. Thirty Seconds to Mars unveiled six songs from their fourth studio album Love, Lust, Faith and Dreams, including "City of Angels", during a preview held at the Electric Lady Studios in New York City on March 14, 2013. Shannon Leto revealed that it was the oldest song written for the album and took a long time to make.While writing the song, Leto was influenced by the culture of Los Angeles and inspired by his relationship with it. He explained that pursuing his creative ambitions in Los Angeles had led to a "love/hate relationship" with the city. Leto told Interview magazine, "the song is about people coming to the City of Angels to live their dreams and to make their dreams their reality. It's about how the other people they've met in the city have helped them—you know, a group of people all kind of joining together into a community of outsiders, of mavericks, of freaks, of artists. It's about coming to a place to do something different and something special.". 
Question: Who had prevously worked wiht Thirty Seconds to Mars on the production of This is War?
Output (English): Steve Lillywhite.