Prime Minister Lee Hsien Loong has shared a 32-second clip of what went on behind the scenes at the recording of his National Day Message.

It shows him dressed in a red shirt, having his make-up done and speaking in front of the cameras, as well as the recording crew setting up at the Victoria Theatre and Concert Hall - his choice of venue for this year's message.

He uploaded the video on his Facebook page yesterday, following a teaser on Tuesday when he posted a photo taken at the iconic landmark and asked: "#guess where this is taken from. This is an easy one. Bonus points if you can guess what I was doing there."

He said he chose the Victoria Theatre and Concert Hall as the buildings were the site of significant events in Singapore's history.

"This national monument is home to the Singapore Symphony Orchestra. It reopened last August after a major four-year renovation. I am glad that the architects retained the beautiful facades, a familiar and beloved sight to many Singaporeans," he said.

This is his 11th National Day Message since becoming prime minister in 2004 and he has brought a modern twist to it over the years, dressing more casually and choosing unique venues.

Previous locations included the Alexandra Park Connector last year, the newly built Safra clubhouse in Toa Payoh in 2013 and Bishan-Ang Mo Kio Park in 2012.

PM Lee's message will be aired in four languages - English, Malay, Mandarin and Tamil - across different channels tomorrow.

The message in English will air at 6.45pm on Channel NewsAsia, the Malay version at 8.30pm on Suria; the Mandarin version at 8.45pm on Channel 8, and the Tamil version at 9pm on Vasantham.

It can also be viewed on the Prime Minister's Office's YouTube channel from 7pm onwards.