Just to put a more modern slant on "Classical Music"...
Always been a fan of Carl Orff
YouTube - Carl Orff: Carmina Burana
Carmina Burana from 1937, recognisable from the film Excalibur.
and at the opposite end of the scale from Schulwerk Vol1 - Musica Poetica
(Basically music for Children!)
YouTube - Carl Orff - Gassenhauer
Again you might recognise it from Terrence Malicks Badlands...But dont confuse it with Hans Zimmers "Your so Cool" from the film True Romance.