Question: Which artist-in-residence at the Walt Disney Concert Hall has also worked with Guy Sigsworth?
Context: Christoph Bull (born August 27, 1966) is a German composer, musician and educator, and a Doctor of Musical Arts (D.M.A.) who was the first organist to record a complete commercial album at the Disney Concert Hall in Los Angeles California using the Frank Gehry co-designed Glatter-Götz/Rosales organ, 2010's "First & Grand Walt Disney Concert Hall Premiere Recording".  Christoph is also the creator of Organica, a multi-media concert and recorded album series that has been performed regularly since April 1999.  Dr. Bull has performed on several soundtracks for movies and television series, including the score for the 2016 remake of Ghostbusters. Nagata Acoustics (永田音響設計 , Nagata onkyō sekkei ) is an international acoustical consultancy firm.  In Japan they have been involved in the design of over seventy concert halls, including the Suntory Hall, Sapporo Concert Hall, Muza Kawasaki Symphony Hall, Kyoto Concert Hall and Hyogo Performing Arts Center; other projects have included the Supreme Court, Tokyo and the sound system for the New National Theatre, Tokyo.  Outside of Japan they have consulted on the Walt Disney Concert Hall, the Danish Radio Concert Hall, Helsinki Music Centre, Mariinsky Concert Hall and Opera House, Elbphilharmonie, Taichung Metropolitan Opera House, and Philharmonie de Paris. The Walt Disney Concert Hall at 111 South Grand Avenue in Downtown of Los Angeles, California, is the fourth hall of the Los Angeles Music Center and was designed by Frank Gehry.  It opened on October 24, 2003.  Bounded by Hope Street, Grand Avenue, and 1st and 2nd Streets, it seats 2,265 people and serves, among other purposes, as the home of the Los Angeles Philharmonic orchestra and the Los Angeles Master Chorale.  The hall is a compromise between an arena seating configuration, like the Berliner Philharmonie by Hans Sharon, and a classical shoebox design like the Vienna Musikverein or the Boston Symphony Hall. Peter Rainer is a German violinist, known by his activity as a concert master and performance of chamber music.  He has been performing at famous music halls such as Berliner Philharmonie, Carnegie Hall in New York City, and Walt Disney Concert Hall in Los Angeles. Guy Sigsworth is a British composer, producer and songwriter.  During his career he has worked with many artists, including Seal, Björk, Goldie, Madonna, Britney Spears, Kate Havnevik, Imogen Heap, Bebel Gilberto, Mozez, David Sylvian, Alanis Morissette, Eric Whitacre and Alison Moyet.  He has also collaborated with many celebrated instrumental musicians, including Talvin Singh, Jon Hassell and Lester Bowie.  He was previously a member of the band Frou Frou together with Imogen Heap. The Grand Avenue Project is a project currently under development in Downtown Los Angeles, along Grand Avenue.  On February 14, 2007 both the Los Angeles City Council and the Los Angeles County Board of Supervisors approved the project, and officials originally hoped to break ground in December 2007.  The project has been developed in stages due to the Great Recession.  On July 26, 2012, Grand Park opened to the public as the initial phase of the project followed by the unveiling of a 19-story luxury condo tower in the Fall of 2014.  The Broad, located between the Disney Concert Hall and the condo tower, opened in 2015.  The final phase of the project, on a lot directly east of the Disney Concert Hall, will have two skyscrapers.  They will consist of two towers.  A 39 story residential tower and a 20 story tower featuring apartments and an Equinox Hotel.  The development was designed by Frank Gehry.  Construction is set to start in December 2018 and open by the end of 2022. Paul Chavez (born July 1, 1964) is an American composer of dance music, and a sound designer for installation and theater.  He often composes under the project name FeltLike.  Chavez has worked in the Los Angeles, California area since 1990 where he did some of his first works at Los Angeles Contemporary Exhibitions where he started as a sound engineer.  Chavez's music is influenced by the minimalism of Steve Reich and Paul Dresher and the experimental music of Robert Ashley and Laurie Anderson.  His work has been featured at the REDCAT Theater in Los Angeles (part of the Walt Disney Concert Hall) and his recent score for the Arcane Collective's dance work Cold Dream Colour was created in collaboration with U2's The Edge. Eric Edward Whitacre (born January2, 1970) is a Grammy-winning American composer, conductor, and speaker, known for his choral, orchestral and wind ensemble music.  He is also known for his "Virtual Choir" projects, bringing individual voices from around the globe together into an online choir.  In March2016, he was appointed as Los Angeles Master Chorale's first artist-in-residence at the Walt Disney Concert Hall. Michael Aaron "Mike" Einziger (born June 21, 1976) is an American musician, best known as the guitarist and co-songwriter of the rock band Incubus.  Einziger is widely known as an innovator and enthusiast of the use of pedalboard guitar effects during live concerts, and was voted #41 in Total Guitar's top 100 guitarists of all time in 2002.  In an interview with Gibson Guitars, writer Steven Rosen states "[Einziger] hasn’t played the guitar so much as he has manipulated it, submitted it to his own needs.  Einziger fashions a sonic tapestry that draws heavily from the Zappa/Vai/Hendrix school of rock."  Mike is also an active composer, writing his first full-scale orchestral concert entitled "End.> vacuum", as well as "Forced Curvature of Reflective Surfaces"; an experimental composition that was featured at the "West Coast, Left Coast" Festival at Walt Disney Concert Hall.  He co-wrote and played acoustic guitar on Avicii's 2013 worldwide hit "Wake Me Up".  Alongside this, Einziger also recently co-wrote and played guitar on David Guetta's Lovers on the Sun. "What It Feels Like for a Girl" is a song by American singer-songwriter Madonna recorded for her eighth studio album "Music" (2000).  It was released as the third single from the album on April 17, 2001 by Maverick Records, with two other versions being also released: a dance-remix produced by Above & Beyond and a Spanish version titled "Lo Que Siente La Mujer".  It was written by Madonna, Guy Sigsworth and David Torn, while production was done by Madonna, Sigsworth and Mark Stent.  "What It Feels Like For a Girl" is a mid-tempo electronic and synthpop song, with filtered bass licks, tidal keys and pads as part of its instrumentation.  Lyrically, it conveys society's double standard toward women, addressing hurtful myths about female inferiority.  To emphasize the message, the song opens with a spoken word sample of Charlotte Gainsbourg from the 1993 film "The Cement Garden".
Answer: Eric Whitacre