Saturday's ‘I Left My Heart in San Francisco’ sing-along to celebrate frontline workers

File photo of singer Tony Bennett performing on stage during a concert in Everett, Massachusetts on August 8, 2019. File photo of singer Tony Bennett performing on stage during a concert in Everett, Massachusetts on August 8, 2019. Photo: Joseph Prezioso, AFP/Getty Images Photo: Joseph Prezioso, AFP/Getty Images Image 1 of / 7 Caption Close Saturday's ‘I Left My Heart in San Francisco’ sing-along to celebrate frontline workers 1 / 7 Back to Gallery

Italians in lockdown kept each other entertained in the evenings by singing and playing music from their balconies. Mill Valley has been howling together at 8 p.m. each night. San Francisco — well, they hadn't yet figured out what their thing is.

Tony Bennett came to the rescue this week, announcing he would be leading a city-wide sing-along of his hit "I Left My Heart in San Francisco" at noon on Saturday.

“I am proud to invite the citizens of San Francisco to raise their voices in song,” Bennett said in a tweet on Thursday. “This Saturday, April 25 at 12pm PDT, join as we sing I Left My Heart in San Francisco from our homes. Let's spread the love and strength throughout the bay! #SingOutSF”

I am proud to invite the citizens of San Francisco to raise their voices in song. This Saturday, April 25 at 12pm PDT, join as we sing I Left My Heart in San Francisco from our homes. Let's spread the love and strength throughout the bay! #SingOutSF pic.twitter.com/7sYkPfskR2 — Tony Bennett (@itstonybennett) April 23, 2020

The sing-along is intended to honor frontline workers working to battle the coronavirus pandemic. Residents are encouraged to share the moment on social media using the hashtag #SingOutSF.

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The idea was organized by San Francisco's Chief of Protocol Charlotte Mailliard Shultz and has since been encouraged by Mayor London Breed.

Share your rendition of “I Left My Heart in San Francisco.” Make a video of yourself belting it out – a cappella, please, without help from Bennett’s recording — during Saturday’s singalong and send it to us by 5 p.m. Saturday via Dropbox, at bit.ly/SingOutSF. It may be featured on SFGATE’s sister site www.sfchronicle.com.

Tessa McLean is a digital editor with SFGATE. Email her at tessa.mclean@sfgate.com or follow her on Twitter @mcleantessa.