It was 50 years ago today that the New Zealand Official Music Charts were launched - which also coincides with New Zealand's first official number one hit. 

Produced by Recorded Music NZ, the charts reflect the most popular singles and albums in Aotearoa each week. They are the only charts endorsed by the music industry and are compiled according to globally recognised guidelines.

The first Kiwi musician to take the top spot was Mark Williams, with his 1975 hit 'Yesterday Was Just The Begginning of My Life'. 

The artist, who now lives in Australia and performs as the frontman of Dragon, joined Nick Mills to discuss the milestone. 

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