Get your listening ears on as Gregory Porter takes us through a musical history of his favourite 20th-century showstopping vocalists.

He starts this three-part series in Italy, where Caruso brought opera to the masses in 1902, then heads to New Orleans, the home of Mahalia Jackson, whose Take My Hand became an anthem for the 1960s civil rights movement.

He also looks at how Freddie Mercury could whip up a crowd, and marvels at the high-note kings and queens of pop like Prince, Whitney and Mariah.

This is music that has Gregory, a natural in front of the camera, laughing and crying – but it always touches his heart.