What would movies be without music?
Music adds quite a bit to an intense or comical scene. It always sets a mood, if done correctly.
Likewise, what would the Sundance Film Festival be without musical performances? Well, imagine the 2005 documentary "Metal: A Headbanger's Journey" without sound bites of Iron Maiden, Dio, Lamb of God and Slipknot.
As has been the case in the past, this year's festival will feature some great performances by upstarts, such as Gold Streets, and veterans, such as Patti Smith. (See accompanying story for performance schedules.)
There will also be a handful of films featuring musical artists such as U2, Mos Def, David Crosby, Stephen Stills, Graham Nash and Neil Young, as well as Sean "P. Diddy" Combs.Here is a list of films that feature musicians in the cast:
"Be Kind Rewind" Rapper Mos Def, known to moviegoers as Ford Prefect in 2005's "Hitchhiker's Guide to the Galaxy," teams with Jack Black and Danny Glover to save an ailing video store in this comedy directed by Michel Gondry.
"The Deal" Rapper LL Cool J, William H. Macy and Meg Ryan star in director Steven Schachter's satirical take on Hollywood movers and shakers.
"Patti Smith: Dream of Life" This documentary, filmed over an 11-year period by director Steven Sebring, examines Smith, the New York poet, painter, activist and rock pioneer.
"A Raisin in the Sun" An updated version of Lorraine Hansberry's play, set in Chicago's working class south side and directed by Kenny Leon, features rap mogul Sean "P. Diddy" Combs and singer Audra McDonald.
"CSNY Deja Vu" This documentary film, directed by Bernard Shakey, features the music of Neil Young's anti-Bush CD, "Living With War." The film takes a journey through the past to the present with supergroup Crosby Stills Nash & Young and their idiosyncratic political activism and music.
"Slingshot Hip Hop" This Jackie Reem Salloum documentary focuses on Palestinian rappers from Israel, Gaza and the West Bank.
"Anvil! The Story of Anvil" Directed by Sacha Gervasi, this documentary spotlights pioneering metal band Anvil through the eyes of founders Robb Reiner and Lips.
"The Drummer" A Hong Kong drama directed by Kenneth Bi follows a young gangster from the streets to adulthood through his involvement with Zen drumming.
"The Guitar" In this drama directed by Amy Redford, a patient with a terminal disease puts all her energies into making it in the music business.
"U2 3D" A 3-D feature film of U2's "Vertigo" tour, featuring singer Bono, guitarist the Edge, bassist Adam Clayton and drummer Larry Mullen Jr. It was directed by Catherine Owens and Mark Pellington.
"Young@Heart" A documentary about a senior-citizens choir based in Massachusetts that sing covers of the Clash, Jimi Hendrix, Sonic Youth and Coldplay.
It will not be a surprise if any or all of the featured musicians/actors are seen at various gatherings or playing impromptu performances during the festival.