Depends on which Twilight Singers album you are referring to. Their debut, Twilight as Played By..., was a mixture of rock, r n b, and techno which was pretty fucking great if I do say so myself, especially because of the vocalists (Greg Dulli and Shawn Smith of The Afghan Whigs) who are awesome.
The second album, Blackberry Belle, is a bit more eclectic. It's also much, much less rnb and more rock. There's dark sultry rock songs, light and happy beautiful songs, and even a country song sung by Mark Lanegan of Screaming Trees and QOTSA fame. It's easily one of my favorite albums of the year.