Filming has begun on 'Bill & Ted Face the Music'.

Alex Winter (c) Instagram

Alex Winter (c) Instagram

Alex Winter - who will reprise his titular alter-ego Bill S. Preston Esq. in the new film alongside Keanu Reeves as Theodore 'Ted' Logan - announced on Monday (01.07.19) that the third instalment of the fantasy teen comedy has begun filming.

Sharing a picture of himself wearing a 'Wyld Stallyns' t-shirt, which is a reference to Bill and Ted's band in the franchise, he said: "Day one. See you on the other side and remember to be excellent @BillandTed3 (sic)"

The movie will feature the duo's daughters, Thea Preston and Billie Logan, who will be played by Samara Weaving and Brigette Lundy-Paine, and their wives, who will be portrayed by Jayma Mays and Erinn Hayes.

William Sadler is set to return as Death 28 years after the second instalment of the saga, 'Bill & Ted's Bogus Journey', which saw the Grim Reaper challenge Bill the duo in a game for their souls, which the pair ultimately win.

The film's official Twitter account previously confirmed the casting news in a tweet which read: "For those who have been asking, @Wm_Sadler will totally be reprising his role! (sic)"

An official synopsis for the movie teased the appearance of a "few music legends" as the two friends set out to save "life as we know it".

It stated: "Yet to fulfil their rock and roll destiny, the now middle-aged best friends set out on a new adventure, when a visitor from the future warns them that only their song can save life as we know it and bring harmony to the universe. Along the way, they will be helped by their families, old friends and a few music legends."

'Bill & Ted Face The Music' - which follows the two loveable slackers who travel through time - is scheduled for release in summer 2020 and sees Dean Parisot directing a screenplay by original writers Chris Matheson and Ed Solomon.

Steven Soderbergh is executive producing along with R. Scott Reid, John Ryan Jr., Scott Fischer and John Santilli.