I hope this isn't horribly old hat, but I thought it might be relevant. The enigmatic music/performance/video collective that is 'iamamiwhoami' started posting mysterious music driven art films on Youtube in late 2009. After obsessive speculation from a cult following it was revealed that the artist in all most of the films is swedish songwriter Jonna Lee. I remember Feist and Gaga were both suspects.
Their use of performance and costume I find particularly interesting. Despite hipster-levels of cryptic imagery, plants and food and common themes (hi Maria & Jonathan).