Fans in Toronto, and all over the world, are mourning over the news that David Bowie passed away at the age of 69 today.

Perhaps you walked past the Bowie graffiti wall near Bathurst Station or thought back to when we were lucky enough to have the massive David Bowie is exhibition at the AGO.

Tomorrow night in Toronto, Holy Holy, a band featuring Bowie collaborators Tony Visconti and Mick "Woody" Woodmansey, will play a scheduled show at the Opera House. They'll perform The Man Who Sold The World in its entirety along with other hits.

If you don't have tickets to that concert, you can join Choir! Choir! Choir! as it pays homage to Bowie on Tuesday and Wednesday night at Clinton's. Instead of Justin Bieber's "Love Yourself," the group will sing "Space Oddity" on both evenings.

CH CH CH CHANGES! This Tues/Weds we sing Space Oddity to honour David Bowie. Doors 7:15, 8pm singing. xo (Biebs Pt 2 will have to wait)

— Choir Choir Choir (@choirchoirchoir) January 11, 2016

Along with musical tributes, many others took to Twitter to express their love and admiration for Bowie.

Can't write a joke for at least a day out of my love for David Bowie. Let's all send love to the creative people that enrich the planet.

— Chris Locke (@chrislockefun) January 11, 2016

Ashes to ashes, dust to stardust. Your brilliance inspired us all. Goodbye Starman. pic.twitter.com/FbcxlAzces

— Chris Hadfield (@Cmdr_Hadfield) January 11, 2016

"Tomorrow belongs to those who can hear it coming". RIP, David Bowie

— Joe Cressy (@joe_cressy) January 11, 2016

Vanity Fair asked late #DavidBowie "What is your idea of perfect happiness?" He responded "reading." His fav 100: https://t.co/kZl2NFIdlt

— TorontoPublicLibrary (@torontolibrary) January 11, 2016

Oh, David Bowie, you meant so, so much to me. You really did. 'My First Series: My first concert' https://t.co/er9gcL2XD6 #RIPDavidBowie

— Benjamin Rayner (@IhateBenRayner) January 11, 2016

And of course, be sure to re-watch former astronaut Chris Hadfield's poignant rendition of "Space Oddity" - a cover that he recorded in space.

Photo by Derek Flack.