Editing K-os (section)

===2007–2010===
[[Image:K-os07.jpg|right|thumb|k-os 2007 Vans Warped Tour in [[Las Cruces, New Mexico]], July 2007]]

His fourth studio album, entitled ''[[Yes! (k-os album)|Yes!]]'', was released on April 14, 2009. Four singles were released from the album. They were "[[4, 3, 2, 1 (k-os song)|4, 3, 2, 1]]", "Burning Bridges", "I Wish I Knew Natalie Portman" and "Zambony".

k-os also held an online contest from 2008 to 2009 at [[Indaba Music]] in which he provided the public with 11 tracks from the album ''Yes!'' to be remixed. At the end of the contest, the most voted remixes of each song were selected to be on a remix album of ''Yes!'' entitled ''Yes It's Yours (Fan Remix Album)'', which is set to be released in the spring of 2009. The 11 contest winners were also awarded $1,000 each.<ref>{{cite web|url=http://www.indabamusic.com/studio_access/kos |archive-url=https://web.archive.org/web/20081207193720/http://www.indabamusic.com/studio_access/kos |url-status=usurped |archive-date=December 7, 2008 |title=Studio Access: K-OS Studio Access |publisher=Indaba Music |access-date=March 31, 2012}}</ref>

In April 2009, k-os began the Karma Tour across Canada. For this tour, no advance tickets were sold. Fans were simply asked to donate what they think the show was worth as they leave the venue.<ref>{{cite web|url=http://www.theglobeandmail.com/servlet/story/LAC.20090429.AKOS29ART1630/TPStory/TPEntertainment/Music/ |archive-url=https://archive.today/20110122162435/http://www.theglobeandmail.com/servlet/story/LAC.20090429.AKOS29ART1630/TPStory/TPEntertainment/Music/ |url-status=dead |archive-date=January 22, 2011 |title=Music |website=Archive.is |access-date=April 6, 2020}} {{registration required}}</ref>

In October 2009, k-os paired up with the [[Stephen Lewis]] Foundation and their campaign A Dare to Remember to raise money for [[HIV/AIDS]] affected families in Africa. The musician will return to his old job at [[Hudson's Bay (retailer)|The Bay]] and will help customers select toys in the store's toy department.{{Citation needed|date=July 2010}}

In November 2009, [[Need for Speed Nitro]] was released. k-os's song "Fun" was featured on the soundtrack, along with the likes of [[Taking Back Sunday]], [[Rye Rye]], [[Major Lazer]], and others.

On February 28, 2010, k-os performed at the [[2010 Winter Olympics closing ceremony]] in Vancouver. On August 9, 2010, k-os released a follow-up [[mixtape]] to ''Yes!'', entitled ''[[The Anchorman Mixtape]]''. Mainly recorded on his tour bus, it featured leftover tracks from ''Yes!'', as well as new tracks.