Grammy winner Bon Iver is among the main attractions for this year's lineup at the Ottawa Folk Festival, it was announced today.

The four-man folk band from Eau Claire, Wis., was a "coup" for the festival, according to head organizer Mark Monahan who also heads Ottawa Bluesfest.

Other attractions include Dan Mangan, Ben Harper, Great Big Sea and Matthew Good. Said the Whale, Matt Mays and Kathleen Edwards are also performing at the festival this year.

FolkFest, which is in its 19th year, runs from Sept. 6 to 10. It was extended to five days this year and takes place at Hog's Back Park between Riverside and Prince of Wales drives.

The festival passport costs $129.