Bohemian Rhapsody, Bryan Singer's biopic about the seminal rock band Queen, has cast Joe Mazzello, Ben Hardy and Gwilym Lee as bandmembers.

Mazzello will play bass guitarist John Deacon, Hardy will play drummer Roger Taylor and Lee will play lead guitarist Brian May.

Rami Malek already is attached to portray legendary frontman Freddie Mercury in the film, which is being produced by Graham King's GK Films banner for 20th Century Fox and New Regency. Justin Haythe (Red Sparrow, Revolutionary Road) penned the script with King, Jim Beach and Singer producing. Denis O'Sullivan, Arnon Milchan and Jane Rosenthal are executive producers. Kira Goldberg is overseeing the project for Fox. 

The production start date is scheduled for this fall. The film is slated for U.S. release on Dec. 25, 2018.

Deacon, aka "Deacy," composed several singles for the group, including Top 10 hits "You're My Best Friend," "Another One Bites the Dust," "Back Chat" and "I Want to Break Free." Deacon was also involved in the management of the band's finances. Taylor, considered one of the most influential rock drummers of all time, also composed at least one track on every Queen album and sang vocals. May, a co-founder of Queen with Mercury and Taylor, was praised for his layered guitar works through the band's reign from the mid-1970s to early 1990s.

Mazzello, who started out with the memorable role of Tim Murphy in the original Jurassic Park, has built up a strong list of film credits over the years including The Social Network, G.I. Joe: Retaliation, The River Wild, Shadowlands and Presumed Innocent. His TV credits include HBO's The Pacific, as well as a recurring role on Justified. He also made his feature directorial debut in 2016 with Undrafted, which he also wrote, produced and starred in. Mazzello is repped by APA, Podwall Entertainment and Felker Toczek.

Hardy was previously seen in X-Men: Apocalypse, and will next star in Mary Shelly with Elle Fanning. He is repped by WME, Untitled and CAM in the UK.

Lee appeared on the TV series Jamestown and Midsomer Murders. His feature credits include The Tourist and the upcoming film The Last Witness. He is repped by Gersh, Authentic and Hamilton Hodell in the U.K.