Curiously there's been no mention of Nick Cave in this thread thusfar.
Murder Ballads has been on repeat as of late. All songs about murder, to some degree, obviously. First track 'Song of Joy' is about killing his family, getting away with it, and then going on to kill and kill again. Standout track might be O'Malley's Bar, in which he depicts himself getting off on being a tall & handsome heaven-sent angel brutally murdering everyone in the bar over the course of the 14+ minute duration of the song.
Also the album 'Your Funeral... My Trial'. The guy seemed to have an erotic fantasy about killing his wife.