Concerto in F Major Opus8 No.3
L'Autunno

First Movement: Allegro - F Major

The opening tutti depicts 'The Countryfolk Dancing and Singing'., and is based on a three bar phrase of tonic and dominant quavers, played twice - once 'forte' then 'piano'. Vivaldi makes great use of these 'echo' (or repeated) phrases.
Music Example 1
This tutti section ends with a perfect cadence before the first solo section begins at bar 14. The first solo is based on the opening tutti, but with a few changes. Again, use is made of a loud phrase echoed by a quiet phrase.
Much use is made of 'double-stopping' (playing two notes simultaneously) in the first solo. The accompaniment returns at bar 27 with a repeat of the opening three bar motif, again with its quieter echo.
The second solo section has the violin representing 'The Drunkard', with descending semiquaver arpeggios followed by descending demi-semiquaver scales. the music portrays the drunkard swaying about.
Music Example 2
In the second tutti, the accompaniment is marked 'Drunkards'. The upper and lower strings alternately playing ascending and descending arpeggios in answer to the soloists scales. The music moves gradually towards the key of G minor, where at bar 57, the opening motif is heard. The motif is altered and extended, moving towards a perfect cadence in D minor.
The third solo section is again marked 'Drunkard', and shows off the soloists virtuoso skills with semiquaver arpeggios and demi-semiquaver/hemi-demi-semiquaver runs. 
The third tutti at bar 77 has the opening motif, this time in C major. Again the motif is extended and modified, leading to the final solo section which depicts 'The Sleeping Drunkard'. The music is marked 'p e larghetto' - quiet and broad, and has a sudden switch of key to F minor.
Music Example 3
The last five bars of this section has the soloist playing a sustained C - the dominant pedal, preparing the listener for the final tutti at bar 106. 
This last tutti, now back in its original key of F major. is an almost exact copy of the opening tutti, being some three bars shorter. The music ends with a perfect cadence in F major.
Second MovementSecond Movement