As much as I love to admire the psychological aspects of Death Note and Light's general descent into madness, I have to admit that for me the true highlight is Ryuk. From his silly little dances ...
In the musical, L commits suicide after having his name written in the Death Note only moments before Ryuk kills Light Yagami with the same Death Note, during the second to last scene in the musical.
The music's recognizability and relevance ... Mello (Death Note), Near (Death Note), Misa Amane, Ryuk, L Lawliet, Light Yagami ...