In 2006, she paired with singer Madeleine Peyroux on a cover of the Joni Mitchell song, "River", for Peyroux's album, "Half the Perfect World". That same year lang was featured in Nellie McKay's second album, "Pretty Little Head", singing with McKay in "We Had it Right". As well, lang sang a version of The Beatles' "Golden Slumbers" for the "Happy Feet" film soundtrack. She also sang a duet with Ann Wilson on the Heart singer's solo album "Hope & Glory" covering the Lucinda Williams song "Jackson".