Great bedtime reading, this, but there's a few errors in it (reproduced by Hewitt-McManus in good faith). It's Alfred Brendel (not Leslie Pearson, as the official film credits would have us believe) performing Franz Schubert's 'Piano Sonata in B Flat Major (D960 lll Scherzo: Allegro Vivace Con Delicatezza)' on the soundtrack.
Similarly, it's not Jimi Hendrix's 'Voodoo Chile' we hear in the film, which is the 15 minute track from side one of his classic 'Electric Ladyland' album, but the album's closer and 7" single-release 'Voodoo Child (Slight Return)' (5:13).
Still on the subject of the music, I can furnish readers with yet more detail: Charlie Kunz's 'My Friend' is actually part of his 'Medley D.115', and his 'Walk Hand in Hand' is taken from 'Medley D.121'.
Great read, though. Recommended.