Liam Costello, a 20-year-old from West Pennant Hills in Sydney, has become a four-time world champion in Irish dancing and got to meet the man who revolutionised the form.

<p>Liam Costello, a 20-year-old from West Pennant Hills in Sydney, has become a four-time world champion in Irish dancing and got to meet the man who revolutionised the form.</p>

Tune into 2GB Drive 3pm-6pm each weekday!

<p>Tune into 2GB Drive 3pm-6pm each weekday!</p>

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