For more information about MP3 and Midi files, and especially for why
they may not work well, or even at all, on your computer, see
here.
To see/hear pieces sorted by composer, click on the link under
composer. The composer pages also usually include much
more information about the composer and about the individual
pieces featured.
To go back to the full list of pieces, click here.
Music marked here as restricted access is still under copyright
and performance limitations in the UK;
further details are given in the associated Composer page
[if accessible to you].
For general information about copyright and performance restrictions,
see here.