Can music be an act of resistance? Karim Wasfi, one of the most celebrated classical performers in the Middle East, certainly thinks so. The former conductor of Iraq's Symphony Orchestra shot to international fame after taking his cello out into the streets of Baghdad and giving impromptu performances at the scenes of recent suicide attacks. He's now taking his unique brand of musical expression to Mosul, the former capital of the Islamic State group. He talks with FRANCE 24 about his message.