Here's The Dan Band tie some of Todd Phillips' biggest comedies together. Todd Phillips launched his directing career with 2000 comedy Road Trip, which was an American Pie-style teen comedy. He followed up with Old School, which became a word of mouth hit and helped turn Will Ferrell and Vince Vaughn into movie stars. Phillips soon became the go-to director for comedy projects, although his 2006 remake School for Scoundrels was a box-office flop.

Phillips' returned to the Old School comedy formula for The Hangover, which became one of the highest-grossing R-rated comedies of all time. He also directed both sequels, though The Hangover Part III was notable for it's darker tone and felt more like a thriller than a comedy. Phillips has moved away from comedy in recent years, directing real-life drama War Dogs in 2016 and most recently Joker. Joker is a dark, grounded reinvention of the famous comic book villain, played by Joaquin Phoenix.

Related: Joker's Ending Explained

While reviews for Joker have been mixed, its become the highest-grossing R-rated movie of all time - which isn't bad for a project that was deemed something of a risk. The movie appears to be a one and done but in light of its success, time will tell if the filmmakers are approached about some kind of follow-up. The sequel is unlikely to include The Dan Band, who weaved a Nick Fury-like thread through most of Phillips' comedies.

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The director saw The Dan Band - which is led by singer Dan Finnerty - and asked them to be the wedding singers in Old School. The Dan Band are known for their foul-mouthed cover versions of hit pop songs, and they memorably performed Bonnie Tyler's “Total Eclipse of the Heart." Their spirited performance and strategic use of swear words made for a memorable scene, and they reunited with Phillips' the next year for the big-screen version of Starsky & Hutch, starring Ben Stiller and Owen Wilson.

In Starsky & Hutch, they perform a completely inappropriate cover of "Feel Like Makin' Love" at a bat mitzvah. The Dan Band's crowning achievement is the cover of 50 Cent's "Candy Shop" during another wedding in The Hangover, which is one of the funniest sequences in the movie. Outside of Phillips' work they've appeared on the likes of The Tonight Show with Jay Leno and The Ellen DeGeneres Show, and they've released a number of albums. Dan Finnerty has also appeared as an actor in movies and shows like Lost Souls, Rock Of Ages and King Of The Hill.

Next: 2019 Has Been Dominated By The People Who Made The Hangover