What is the story behind each of these works? How does the story in the video compliment the music? What is the significance in the way the producer has chosen to go between the shots of the performers and the storyline?

What is the story behind each of these works? How does the story in the video compliment the music? What is the significance in the way the producer has chosen to go between the shots of the performers and the storyline?

Yo-Yo Ma – Bach: Cello Suite No. 1 in G Major, Prélude (Official Video)
(Links to an external site.)

Janine Jansen – Après un reve – Fauré (official video)
(Links to an external site.)

Víkingur Ólafsson – Bach: Organ Sonata No. 4, BWV 528: II. Andante [Adagio]
(Transcr. Stradal)