It might seem creepy to talk about sex in relation to Michael Jackson, but in the fourth and final part of our series on his non-verbal vocalisations, we examine their sexual connotations.

You might think high-pitched shrieks aren't especially manly, but in the third of our four-part series, we examine the unexpected things Michael Jackson's non-verbal vocalisations reveal about gender.

In the second of this four-part series, we explore the racial implications of Michael Jackson's non-verbal vocalisations. He's black! He's white! Shamon! Hoo!

In the aftermath of Michael Jackson's death, this four-part series examines one of the best-known but least-investigated aspects of his music – his idiosyncratic non-verbal vocalisations.