I think you could hide most accents when singing, but my particular example was a sort of half-singing thing (when we recorded the song for a demo, the producer thought it was some sort of rap )
Plus, I think it would be 'notorious for' not 'notoriously bad for'; that seems to say the opposite thing, or is at least a tautology. (What? This thread has 'English' in the title. Twice!)