Adding Color to Music by borrowing chords from other modes in music. This is a two part series, the second video covers using secondary dominants to add colour to music.. Couple of mistakes in the video which I didn't spot in the edit Apologies (will do better in future):

2:54 It is "Africa by Toto" not "Toto by Africa" (thanks for highlighting)
4:05 Should be "Lydian" not "Dorian"
4:49 The Chords "C/G & C/E" should be "C"