In the Renaissance, man had discovered his/her individuality, in the Baroque era at times this led to excessive and almost luxuriant exuberance. In music, new forms emerged like the opera and the styled dance suite. Instrumental music became predominant…
A characteristic of Baroque music is the basso continuo, the harmonic base that enabled soloists to improvise.
Music became strictly structured, both in style and sound. Striking examples are the ornamentations that had to satisfy all kinds of stylistic rules. Polyphony became popular, with the Fugues by Bach as obvious examples.
The most important composer of this section, as far as I am concerned, is Bach. His music often is a challenge for guitarists
The DOS Amigos Homepage provides a collection of 8 duo pieces from the Baroque era.