One Day - Opshop song - was created in 2007.
One Fine Day - song - was created in 1980-05.
One More Day - Eldrine song - was created in 2011.
That Day - One Buck Short song - was created in 2003.
One Day - Matisyahu song - was created on 2009-06-23.
One Day in Your Life - Anastacia song - was created on 2002-03-04.
One Song a Day Takes Mischief Away was created in 1970.
One More Day - New Edition song - was created on 1997-05-28.
After seeing the episode I knew that song, but just couldn't get it, and no-one out there knew. However I figured it out and is called "Big Energy in Little Spaces" by an awesome New Zealand band called Opshop. It is a good song but they have so many better than that too. Look for them on youtube
One to One - song - was created in 1982-06.
Soup for One - song - was created in 1982.
The Quiet One - The Who song - was created in 1981.
Lucky One - song - was created in 1994.