First things that come to mind, not all similar in the same way, mostly happy, simple songs, often with a good beat:
Mumford and Sons (e.g. album: Sigh No More)
Kimya Dawson (e.g. album: Remember That I Love You) Sample Song
Feist (e.g. album: Monarch: Lay Your Jewelled Head Down or The Reminder)
First things that come to mind, not all similar in the same way, mostly happy, simple songs, often with a good beat:
Mumford and Sons (e.g. album: Sigh No More)
Kimya Dawson (e.g. album: Remember That I Love You) Sample Song
Feist (e.g. album: Monarch: Lay Your Jewelled Head Down or The Reminder)