Songfacts®:

• "Dead Asleep" explores the theme of parasomnia sleep disorders as part of Dream Theater's concept album Parasomnia. It focuses on the tragic consequences of a severe sleepwalking episode combined with a night terror.
• In 2009 Welshman Brian Thomas, believing he was fighting off a home intruder in his dream, accidentally strangled his wife Christine in their bed. After being held in custody for several months, he was found not guilty.
  
  The case received significant media attention, and Dream Theater lyricist John Petrucci drew inspiration from the news articles to craft the song's narrative.
• The song also draws inspiration from a 2021 documentary, also titled Dead Asleep, which examines the case of Randy Herman Jr.'s 2019 conviction for murdering his roommate Brooke Preston with a knife, when he claims he was sleepwalking.
• "Parasomnia" is a term for disruptive, sleep-related disturbances, including sleepwalking, sleep paralysis, and night terrors. Recorded between February and July 2024 at the band's Long Island headquarters, the album is steeped in the unsettling world of sleep disorders.
• Parasomnia's concept is not based on any real-life sleeping disorders within the band. John Petrucci first heard the term a few years earlier and kept it in his back pocket.
  
  "I love the sound of that word," he told Billboard. "I love the tie-in to dreams and Dream Theater, and I loved that the subject matter could be so creepy and dark and heavy."
  
  He researched the various parasomnias and used them as the basis for the songs.