From last.fm:

Great Lake Swimmers is a Canadian indie folk band which formed in 2003 in Wainfleet, Ontario, Canada. The band began with Tony Dekker (vocals, guitar, harmonica), Erik Arneson (banjo, guitar, harmonium), Bret Higgens (bass), Julie Fader (keyboards, vocals) and Greg Millson (drums). Julie Fader subsequently left, and Miranda Mulholland, on violin and backing vocals, joined. Fifty-five years ago, Marilyn Bell took a plunge and traversed Lake Ontario. Back then, being a Great Lake swimmer was a big deal; now, it's an astonishing physical feat taken for granted. Read more about Great Lake Swimmers on Last.fm.