Mostly off the top of my head, and in no particular order:

• The National
• The Antlers
• The New Pornographers - Neko Case would also do a separate set of her solo work
• St Vincent
• Vampire Weekend
• Ra Ra Riot
• Death Cab for Cutie - mostly for 'Stay Young, Go Dancing'
• Arcade Fire
• Adele
• Girl Talk
• Cut Copy
• Local Natives
• Bon Iver
• Madjo
• Calvin Harris
• Brooklyn Rider
• Frank Ocean
• The Shins
• Damien Rice
• Foster The People