Eddie Vedder is a Singer and Songwriter from Illinois. He made the music for the film “Into the Wild”.
Glen Hansard is vocalist and guitarist of the band The Frames and of the folk rock duo The Swell Season, in which he sings with Markéta Irglová. Glen Hansard and Markéta Irglová are both starring in the oscar-winning film Once.
Watch Eddie Vedder and Glen Hansard perform the Song “Sleepless Nights” in San Francisco.
You can listen to a studio version of the song on Spotify.
World Music - the Music Journey 
Love ‘Once’ – brilliant film, and great music. Who wouldve thought the guitarist in the commitments would go on to write such fabulous songs?
I also think the film ‘Once’ is great. It is very authentic and the music is fantastic. I like musicians who just play guitar and sing. :)