"I'm Yours" is the first single released by Jason Mraz from his third studio album We Sing. We Dance. We Steal Things. The song was originally released on a limited edition EP called Extra Credit as a demo in 2005 to promote his second studio album Mr. A–Z. It was performed in his 2004 and 2005 gigs and already became a crowd favorite before its release. "I'm Yours" was nominated for Grammy Award for Song of the Year and Best Male Pop Vocal Performance at the 51st Grammy Awards. It was also used for the Australian Seven Network's promotion of the season premiere of Packed to the Rafters.
"I'm Yours" was immensely successful in the U.S. on the Billboard charts. At 76 weeks on the Hot 100, it holds the record for most weeks spent on the chart, breaking the previous record set by LeAnn Rimes' song "How Do I Live" in 1998. It is currently the sixth best selling digital song of all time in the U.S., selling in excess of 5 million downloads. It remains Mraz's biggest hit single in the USA to date, and his only one to reach the Top 10 of the Billboard Hot 100. Mraz even sung a version of the song on Sesame Street, instead of "I'm Yours" the song was titled, "Outdoors."