10 Small Details You Only Notice Rewatching Happy Death Day
6. Wake-Up Call
During your first viewing of Happy Death Day, you may notice that Tree wakes up to that same annoying Happy Birthday song on her phone. However, you may have also missed something else from her repeated mornings.
In the sequel, Happy Death Day 2U, when we see Carter's roommate Ryan go on the journey from his car to the dorm room, we see another student blowing a trombone at one of the dorm rooms, followed by a loud "SHUT UP!". While you may think this is the first time this is referenced, rewatch the first movie again.
Every morning when Tree is waking up, you can clearly hear the student practicing that instrument followed by the angry response. While it's never seen in the first movie, we finally see the altercation in the sequel. Now that is attention to detail.