Canadian Music Fest. The deadline for applications is October 27th.
The 2013 Fest is the 31st edition and takes place March 19-24th, 2013 (immediately following SXSW).
Over 60 venues will host performances and it's a great way to get yourself in front of thousands of industry types, hundreds of media folks, and oh yeah the odd fan or too as well.
Visit the website for details on applying.