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Once
- Năm: 2007
- Quốc gia: Ireland, United States of America
- Thể loại: Phim Chính Kịch, Phim Nhạc, Phim Lãng Mạn
- Studio: Samson Films, Summit Entertainment, RTÉ, Fís Éireann/Screen Ireland
- Từ khóa: rock 'n' roll, lovesickness, love of one's life, composer, pop, music instrument, lovers, dublin, ireland, recording studio, pianist, ireland, music store, street musician, songwriting, recording session, street singer, busking
- Giám đốc: John Carney
- Diễn viên: Glen Hansard, Markéta Irglová, Hugh Walsh, Gerard Hendrick, Alaistair Foley, Geoff Minogue