Elton John performs stunning rendition of 'Your Song' with his sons at Saks Fifth Avenue’s Window Unveiling

Just two days after wrapping up his final American performance of his Farewell Yellow Brick Road tour, Sir Elton John kicked off the holiday season with a little help from his family in the Big Apple.

The 75-year-old music legend literally stopped traffic as he belted out a heartfelt rendition of 'Your Song,' in the middle of Fifth Avenue in New York for Saks Fifth Avenue’s holiday window unveiling and light show.

The surprise performance comes as the retailer partnered with the Elton John AIDS Foundation, whose mission is to "redouble the fight against AIDS."

The partnership includes a $1 million donation to the Foundation’s Rocket Fund, a dedicated window display at the flagship store and a curated multi-vendor merchandise collection, of which $500,000 will be donated to the Fund regardless of sales.

The collection, which was co-curated between Saks and the Rocket Man, features pieces from more than 60 designers such as Gucci, Versace, Valentino, Jason Wu and more.

"I’m excited to collaborate with an iconic brand like Saks that is going the extra mile to make this world a brighter, more accepting place this holiday season and beyond," John said in a statement.

"While it's the happiest time of the year for many, we mustn’t forget about the billions of people around the world for whom safety, respect and dignity are not guaranteed."

The end of the show was marked by fireworks, which John enjoyed alongside his husband David Furnish and their two sons, Zachary and Elijah.