The sonata à tre was one of the most typical instrumental forms of the Baroque era. While in its 'classical' form it calls for two treble instruments combined with a melodic bass instrument and basso continuo, it had several 'variants' in the ensemble, including the one for treble instrument, bass instrument and continuo, which was very popular. In this formation, to which a substantial number of composers (not only of the 17th century) dedicated an important number of compositions, the part of the treble instrument presents a more virtuosic and soloistic writing than that of the 'conventional' trio sonata. At the same time, the bass instrument, not reduced to the sole function of basso continuo, is treated as an equal melodic counterpart. This new recording presents the two composers who most influenced the birth and development of instrumental 'chamber' music, namely Girolamo Frescobaldi (1583-1643) and Dario Castello (1602-1631). Whereas Frescobaldi represents the pinnacle of an older style, the works of Castello look forward and form the basis of the chamber music style of centuries to come. The soloist of this recording is David Brutti, playing the Cornetto, a hybrid instrument with the fingerholes of a woodwind and a brass-type mouthpiece. Renato Criscuolo plays the bass violin, and the organ or harpsichord is played by Nicola Lamon.