Question: Which American songwriter who has written songs for and with multiple music artists, as well as for several films, and contributed to Kathy Troccoli's album Pure Attraction?

Context paragraphs:
Pure Attraction: Pure Attraction is the fourth full-length album by singer-songwriter Kathy Troccoli.  It saw her moving slowly away from Christian music and into pop territory, with two songs written by Diane Warren.  It featured the top five CCM and top twenty pop hit "Everything Changes", and featured seven songs co-written by Troccoli.

Corner of Eden: Corner of Eden is the ninth full-length album from singer-songwriter Kathy Troccoli.  It marks the first time she co-wrote all of the album's songs.

Gary Dunham: Gary Dunham (born March 25, 1951) is an American Contemporary Christian recording artist.  He has played professionally since the late 1960s.  In addition to his two solo albums, he has written songs for many other artists including Kathy Troccoli, Sandi Patty, and the Gaither Vocal Band.  His musical versatility has enabled him to traverse several musical genres including gospel, country, and rock.

Heart and Soul (Kathy Troccoli album): Heart and Soul is the second studio album by singer-songwriter Kathy Troccoli.  This album received a Grammy nomination in 1984, and contains songs written by Michael W. Smith.  It featured music popular with CCM, as well as synthpop friendly songs, "I Belong To You", "Holy Holy", and "Hearts Of Fire".  The album features the songwriting skills of Brown and Debbie Bannister, Amy Grant, Gary Chapman, Michael W. Smith, as well as others.  The music is a blend of contemporary pop, synthpop, and gospel music.  It was released as a vinyl LP record.

Love and Mercy (album): Love and Mercy is the seventh full-length album by Christian music singer-songwriter Kathy Troccoli.  It saw her move back into CCM, with a heavy dose of gospel music.

Bob McDill: Robert Lee "Bob" McDill (born April 4, 1944 in Walden (near Beaumont), Texas) is an American retired songwriter.  Active from the 1960s until 2000, he has written songs for many country music artists, including 31 number one hits, as well as songs for Ray Charles, Joe Cocker, Anne Murray, Juice Newton, and other popular artists.  In addition to four Grammy nominations, McDill has received Songwriter of the Year awards from Broadcast Music Incorporated, the American Society of Composers, Authors and Publishers, and the Nashville Songwriters Association International.  In October, 2012, he was awarded ASCAP's Golden Note Award in recognition of his "extraordinary place in American popular music."

Kathy Troccoli (album): "Kathy Troccoli" is the self-titled full-length album from singer-songwriter Kathy Troccoli.  It was released on Reunion Records in 1994.  Like her previous release, Pure Attraction, it featured a heavy emphasis on pop songs, with songwriter Diane Warren contributing one track.

Diane Warren: Diane Eve Warren (born September 7, 1956) is an American songwriter.  She rose to prominence in 1983, and has since written songs for and with multiple music artists, as well as for several films.

David Huntsinger: David Huntsinger is a pianist, composer, songwriter, and arranger who moved from his native California to Nashville, TN, in 1976 and played for the Rambos.  He co-wrote the song, "Holy Spirit, Thou Art Welcome", with Dottie Rambo, as well as the children’s musical, "Down By The Creek Bank".  In 1979 he left the Rambos to pursue a career as a studio pianist.  He wrote and arranged music for the 1989 Grammy-winning album "A Child’s Gift of Lullabyes", and arranged for and co-produced Andy Griffith’s 1996 Grammy-winning album, "I Love To Tell The Story: 25 Timeless Hymns".  He has worked with many artists, such as Sandi Patti, Steve Green, Kathy Troccoli, Michael Crawford, Glen Campbell, Carman, Larnelle Harris, Johnny Cash and Dolly Parton.  He toured with Vince Gill for a Christmas tour in 1999, and in 2001 for the Amy Grant/Vince Gill Christmas tour.  He has also written a number of children’s musicals, as well as produced many albums of his own original works and arrangements.  He played the piano for "An Unfinished Life", and contributed to two songs heard in "The Great Debaters".  He arranged for and played piano in the 1997 Christmas album "Piano Winterlude" (Unison).  He has done several projects for Discovery House Music.  In 2010 he composed a number of pieces for a special 25th Anniversary concert for the international television network 3ABN called "Pillars of Our Faith".

David T. Clydesdale: David T. Clydesdale (born 1954) is an American musical artist, songwriter, arranger, and conductor.  A recipient of a Grammy Award and Dove Award, he has received five gold record certifications, and one platinum record.  Since 1974, he has collaborated with and written songs for notable Christian music artists, such as Steve Green, Sandy Patty, Dottie Rambo, Debby Boone, Dino, Point of Grace, as well as mainstream acts such as Aretha Franklin, the US Army Band Chorus, and Hallmark Card’s Christmas albums.  He is perhaps best known for his Christmas musicals, although he has written several Easter musicals as well.  He has also created works for Six Flags Amusement Parks and Walt Disney World Productions.  He is married to Celeste Clydesdale, a multiple Dove Award-winning creator of Children's Music.

Supporting paragraphs: Pure Attraction Diane Warren
Answer: Diane Warren