Singer Roisin Murphy has launched a stinging attack on soccer ace David Beckham, accusing him of displaying a "disturbing" lack of charisma whenever he's interviewed. The former Moloko star is infuriated by the L.A. Galaxy hunk's inability to speak from the heart, claiming he employs a robotic response and a blank facial expression to answer questions about his personal life. Murphy has issued an appeal to Beckham to stop hiding his true personality on TV - because it makes for dull viewing, and leaves her feeling angry. She tells WENN, "He gets on my tits! I saw him on (British talk show) Parkinson and they had this close up of his face. The whole interview was just his face on the screen - his face was filling the screen. And there was nothing there. There was no let-up in the stock answers - he was like a politician, in his own way. "I find it quite surprising - he doesn't have to be like that. He's a good looking lad and he's really talented. He doesn't have to play it that safe with his own persona. Victoria (Beckham) doesn't do that, does she? She lets slip. But he never lets slip. And there's not even a flicker or a blink and he's straight into the answer he wants to give and to me that's a bit disturbing. He should just let loose a little bit and be himself."