So as you can see here, we've got the genre of music called a concerto,
in which one or more soloists play, with and against a larger orchestra.
We have a solo concerto,
that's one type of concerto in which we've got just a soloist plus orchestra.
And in the Baroque period we've got this genre called the concerto grosso,
which has several soloists plus orchestra.
When they all play together, soloists and full orchestra, that's called the tutti.
But that full group can be divided into a big group, a larger group,
called the concerto grosso, and a smaller group,
the little group of just soloists called the concertino.
So we've got these soloists, and
we've, basically we've got everybody playing together.
Generally speaking, concerti grossi are written for three movements, or
are written in three movements, fast-slow-fast.
The popularity of the genre peaked about 1730 and then diminished thereafter.
But that the solo concerto continued into the Romantic period.
Indeed, and really, even into the Modern period as well, because it offered
the opportunity for, in fact, a single soloist to showcase his or her styles.
Now, these pieces, these genres, of the concerto grosso,
fast-slow-fast in terms of movements.
The first movement was usually written in ritornello form.
So let's take a look at that now in our next slide.
And it's a very simple idea.
It's just an alter, alternation.
Much as we have in ritorn, rondo form.
Much as we have in rondo form, of this idea of a refrain.