Prelude in C major

well, composed 3 preludes, 21 to go...

hope you like this one,

quite sudden change in keys, pls suggest how to do it in a better. (not looking for classic change)

Hi

Repetition and variation. They are the essentials of this style of composition (baroque-classic).

I mean, the Prelude can take  many Forms: binary song, ternary song, song with trio, different types of "rondó", etc... If you compose in such a classic style, using the great Forms help to organise your work = repetition and variation.

This piece seems to be a kind of ABCD structure, (perhaps the final section reminds to the first one). This is like a "rhapsody", where you write parts and parts, without repeating material. But this is not a classic Form. It's more a late-romantic (I would say) Form.

Of course, you can do whatever you want. But when the language is 100% tonal, like this, your work will surely benefit from the Forms. I spent some weeks studying Forms (it's amazing) and I learned a lot...

thx for the advice

It sounds nice, I just have a couple issues with some of your contrapuntal stuff; some of your passing tones conflict with a harmonic tone and other times your suspended tones clash with the bass line, mostly in your Andante section (i.e. m. 40 and 43). 

will take that, was trying something that is present in Brahms music. still need to practice more. thanks for the comment