question: Who once led a campaign for the musical artist who once toured with Sufjan Steven's?
answer: Nabil Ayers
context: Title: Nabil Ayers
  Passage: Nabil Ayers is an American entrepreneur and musician.  He is the U.S. Label Manager for UK-based record label 4AD where he has led album campaigns for The National, Grimes, St. Vincent, Purity Ring, Deerhunter, tUnE-yArDs, Future Islands and others.  Ayers co-founded Seattle’s Sonic Boom Records store with his business partner, Jason Hughes, and founded the independent record label The Control Group.  As a drummer, he has performed with various acts, most recently The Long Winters and Tommy Stinson.
  Title: Dawn Landes
  Passage: Dawn Landes is an American singer-songwriter and musician.  She is originally from around Louisville, Kentucky but spent many years living and performing in Brooklyn, New York.  As a recording artist she has released four full-length albums: "dawn's music" (2005), "Fireproof" (2008), "Sweetheart Rodeo" (2010), and "Bluebird" (2014) and five EPs: "Straight Lines" (2006), "Two Three Four" (2006), "Mal Habillée" (2012), "Covers EP" (2014) and "Desert Songs" (2015).  In support of her releases, Landes has toured extensively in the US, Europe and around the world, often sharing the stage with artists such as Ray Lamontagne, Feist, Andrew Bird, José González, The Weakerthans, Midlake, Suzanne Vega, and Sufjan Stevens.
  Title: Celinde Schoenmaker
  Passage: Celinde Schoenmaker (born 15 January 1989) is a Dutch musical artist .  She studied Music at the Fontys Academy of Arts in Tilburg; she graduated this training in 2012 with summa cum laude honors.  At that time she had already been cast for the female lead in the Dutch version of Ghost the Musical , but this production was postponed indefinitely and never came to pass.  Since then, she has appeared as Fantine in the West End production of the musical Les Misérables and as Jenny Cavalleri in the Dutch touring production of Love Story.  From 7 September 2015 she has been playing in the West End production of The Phantom of the Opera in the role of Christine Daaè.
  Title: St. Vincent (musician)
  Passage: Anne Erin "Annie" Clark (born September 28, 1982), better known by her stage name St. Vincent, is an American musician, singer-songwriter, and multi-instrumentalist.  After studying at Berklee College of Music for three years, she began her music career as a member of the Polyphonic Spree.  Clark was also a member of Sufjan Stevens's touring band before forming her own band in 2006.
citations: St. Vincent (musician) Nabil Ayers