Earworms are a common phenomenon where songs can get stuck in our heads due to various triggers, including music exposure, repeated hearing, and environmental stimuli. Dr. Vicky Williamson, a music psychologist, has collected over 2,500 earworm experiences and identified individuality as a key feature, with some songs being reported by multiple people. Triggers for earworms include music exposure, repeated hearing, stress, and environmental stimuli, and theories behind earworms suggest that involuntary memory, multi-sensory stimulus, and emotional encoding may contribute to this experience. Experts, such as Daniel Levitin, suggest thinking of another song to displace the unwanted tune, while Dr. Williamson is exploring "cures" for earworms.