Frédéric Chopin - Songbook

The Prelude Op28 by Romantic Polish piano virtuoso and composer is an ensemble of independently written pieces (making them a Prelude to nothing else, which is a whole new idea in itself) exploring the twenty four keys (including major and minor) of Western music. They remain as stepping stones for any piano apprentice and any budding guitarist could really benefit from those adaptations, from a technical but also from a compositional point of view. And you get four Mazurkas as well ! That should keep you working for a while...