TORONTO -- Justin Bieber's road to redemption continues.

On Tuesday, the beleaguered pop superstar surprised fans with plans for an intimate Toronto concert to benefit an outreach centre that helped him and his mother in his hometown of Stratford, Ont.

The 21-year-old took to his Twitter account to announce that he'll perform an acoustic show at the Danforth Music Hall on Dec. 7 to benefit the Stratford House of Blessing. Tickets, which were priced at $100 each, quickly sold out.

This isn't the first time Bieber has donated to the Stratford House of Blessing, which has a food bank and helps those in need through various services.

"His mother used our services when he was little and it's their way of giving back to their community," said executive director Theresa McMurray.

Last year, he and his grandmother donated several of his childhood items from his original house for the group to auction off on eBay. The items -- which included a lamp, a comforter, a sheet set and a pair of shoes -- netted $64,000.

Bieber has also donated $10,000 to the group and convinced American TV personality Billy Bush to give them $5,000 after the singer helped him get more followers on Twitter.

"Thank you for being there when we needed you :) now it's my turn," Bieber tweeted at the Stratford House of Blessing on Tuesday.

McMurray said she just learned about the concert Tuesday morning when Bieber's label, Universal Music Canada, called. She was "overwhelmed" with the news.

"All I could say when they called me was 'Thank you, thank you, thank you,"' she said, "because there are so many people in need and that's what we do on a regular basis, every day -- is extending our hand of kindness and hope to people, making their lives a little bit brighter as they struggle in this day and age."

Bieber has made a huge comeback -- personally and professionally -- with his new album "Purpose," which includes the hits "Sorry" and "What Do You Mean."

Late last month, the album beat out One Direction's latest to debut at No. 1 on the Billboard charts. Bieber also recently won an American Music Award for best collaboration with Skrillex and Diplo for "Where Are U Now."

Bieber has also been atoning for his former controversies in recent months, through a Comedy Central roast and various apologetic interviews.

In February, he'll make a cameo in the "Zoolander 2" film and in March he'll kick off a 58-city tour.