Check out CBC's Radio 2 website for its Concert on Demand of the Oscar Peterson Tribute - Simply The Best concert from Saturday, January 12, 2008. I understand that this link will be valid for one year, so listen and listen often.
As a jazz musician, Oscar inevitably re-interpreted standards all the time, and that to me, is a form of songwriting - that reinterpretation to put an artist's stamp on a standard. One of the originals he did write, Hymn to Freedom - the unofficial anthem for the Civil Rights movement in the U.S. in the '60's, is included in this concert.
People lined up for hours to get into this free concert and you can experience it online for free as well... He was "simply the best..."