Talk:Trio sonata

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trio sonata with two parts?[edit]

"A further innovation of Bach was the creation of what are strictly trio sonatas, involving a concertante (obligato) harpsichord part and one melodic instrument, thus for two players." -- Then what is the third part? And what is meant by "strictly"? I'm not familiar with the construction of a harpsichord, but I think that unlike an organ, it does not have a foot pedal. (I'm totally out of my depth here, just came looking for an explanation.)

Also, "The trio sonatas by Arcangelo Corelli (opus I, 1681, opus III, 1689) set an inspiring example." This sounds like opinion, should be rewritten.

Milkunderwood (talk) 08:04, 16 May 2011 (UTC)

In keyboard texture, one line is customarily given to the right hand, and another to the left. It is of course possible to incorporate three, four, five, or more voices into a part for one keyboard player, but the essential element here is that the harpsichord is most commonly found in trio sonatas as a continuo instrument only. As such, it plays from a figured bass, and represents therefore only one of the three lines of music defining the composition as a "trio". In Bach's trios with obligato harpsichord, one line is assigned to a melody instrument (violin, flute viola da gamba), a second line is written out for the right hand of the harpsichordist, and the third line (as usual) is played by the left hand. Bach also composed trio sonatas for organ alone, in which the two upper lines are played on the manual by the two hands, and the bass is given to the pedals. Your point about the Corelli is well-taken, and should either be cited to a source, or rewritten.—Jerome Kohl (talk) 17:29, 16 May 2011 (UTC)