Sheila Heti (pictured here hiding behind this chair) is one of the many artists invited by the Music Gallery for its fundraiser "Compose Yourself."

Heti, along with filmmaker Atom Egoyan, philosopher Mark Kingwell, minor media mogul Moses Znaimer, and haircut facilitator Darren O'Donnell will come with compositions or ideas for compositions that will be played by an improvisational supergroup.

The concert starts at 8pm and is $25.