Halloween music trends include classical favorites, live performances, and themed music videos. Artists such as Tegan & Sara, Stars, Land of Talk, Ghostkeeper, and The Pairs are shown in a CBC special. Serpent's 'Season of the Witch' video and a party playlist of top Halloween songs are also mentioned. Post Malone shares an anecdote about his Halloween in New Orleans, adding a personal touch. The trend showcases various musical elements to celebrate the Halloween season.