How is frequency related to pitch? We revisit an interview with our favourite music correspondent, Oli Freke, to find out! In this podcast you can hear how the music we love emerges from pure mathematical beats.

This podcast was originally released earlier this year when musician Ed Sheeran was in the news as he was being sued for similarities between his song Thinking out loud from 2014, and Marvin Gaye's song Get it on from 1973. But, given the way we write music to fit into specific genres, is it possible to write unique music with the limited quantity of notes and chords available?

After first answering this question in this podcast, Oli has now written a brilliant article, From clicks to chords, where you can see some of the connections between maths and music come to life.

You can find out more about the maths in music in Oli's articles – How many melodies are there? and Sine language. And you can find more of Oli's music, and his book "Synthesizer Evolution", here!

The music in this podcast comes from, of course, Oli Freke! The track is called Funk Off.

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