Music has the power to change people's mood, to change their perspective, and, once in a while, to change the world.
We've put together a playlist of tunes that deal with change in all its forms.
From Sam Cooke's classic 'A Change Is Gonna Come' to Public Enemy's 'Fight the Power' to Johnny Cash and Joe Strummer's cover of Bob Marley's classic 'Redemption Song', these are tunes that are all about big changes in society.
And as music often does, these tunes offer a powerful, personal window into the experience of that change.
Ian D'Sa, the guitarist from Billy Talent, and Cone McCaslin, Sum 41's bassist are both in the red chair tonight, Tuesday July 2, and they're going to talk about a contest they're working on involving songs about change.
The pair are working with Make Music Matter, a Canadian organization that operates in countries that have "been deeply scarred by conflict, HIV/AIDS, and violence against women," on the My Song for Change contest.
It's a competition that asks young people in Canada to write a song that sheds light on global issues, and the pressures that youth face.
All the entries are now in, but you can check out all the songs and vote for your favourite online at the My Song For Change website.
The voting deadline is July 31st, with the winner getting to record their song with Ian, Cone and a Grammy Award-winning producer.