"This presentation explores the influence and adaptation of Blues, Jazz and Rock & Roll to the concert music of the twentieth century."
"Session length: 75 – 90 minutes."
Although this lectures isn't recorded he already has a presentation prepared on this topic
He also has a separate file presentation on blues, jazz and rock and roll itself
So he has material to talk about blues jazz and rock and roll in of itself as well as a separate lecture to talk about their influence on concert music