Singing low doesn't make someone a bad singer. At all. He's clearly more of a baritone. And Dexter has problems even when he sings low. He doesn't sound good live on songs like Kristy or Fix You or A Lot Like Me. Billie Joe is not a good singer at all, either. But he makes up for it by being an exciting, energetic frontman. Dexter makes up for his lack of singing skills by being an excellent songwriter.