My alarm clock is always set to a classical music station, and this morning my rather groggy brain absorbed a lovely sonata by Scarlatti. On the radio it was played on piano, but it sounds equally well, if not better, on harpsichord.
Giuseppe Domenico Scarlatti was born in Naples, 1685. He played for royalty and composed 555 keyboard sonatas. He also composed many operas, cantatas, symphonias, and church music. You can read more about Scarlatti here. There are sources for sheet music at the bottom of the Wikipedia article, and Mutopia has some Scarlatti sheet music as well.