Final answer:
The fourth movement of Beethoven's 9th Symphony was the last movement to be composed. It was completed by Beethoven himself and it reflects his transitionary composition style between the Classical and Romantic periods, marking a move towards deep personal expression in music.
Step-by-step explanation:
As we look at Ludwig van Beethoven’s Symphony No. 9 in D Minor, Op. 125, commonly known as the 9th Symphony, it is important to note its historical context as well as its composition process. Beethoven started working on this symphony in 1822 and continued over several years with various interruptions.
The era in which this symphony was finalized (1824) bridges the gap between the Classical and Romantic periods, following the timeline of the post-Romantic era when composers were experimenting with extending Romantic musical techniques. Unlike composers from the later post-Romantic era, such as Mahler and Strauss.