It seems that many artists have a song or two in particular that sing about their choice to join the dark side. Here are some songs/videos that I've noticed contain lyrics and imagery suggesting of choosing the dark side in their struggle of good and evil. If anybody notices any other works that mark this event in a musician's career, it would be great to get a compilation going...
'Umbrella' by Rihanna
'My Darling' by Eminem
'Hotel California' by The Eagles
'Umbrella' by Rihanna
'My Darling' by Eminem
'Hotel California' by The Eagles