Second voice expert gives evidence in Duffy trial - The Irish News
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Colin Duffy secretly recorded on holiday, court hears - BBC News
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Duffy (singer) - Wikipedia
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Wee Duffy by LJDUFFY on SoundCloud - Hear the world's sounds
Luca Perasi on Twitter: "Sound engineer Alan O'Duffy reveals anecdotes of VENUS AND MARS in an exclusive interview! http://t.co/Kro7J0JrSR http://t.co/RfNDrRelMd"