I'm looking for a word which I've seen used most often when describing works of music, art or literature. I thought the word was "diminutive" but that appears to be incorrect.

I am *not* looking for a word which describes *something based on a prototype* (which has already been asked [here](https://english.stackexchange.com/questions/118923/what-is-the-word-for-something-that-is-based-on-a-prototype)).

Instead, I am looking for the word which describes, somewhat pejoratively, something which *borrows* elements from a predecessor or predecessors that *were not intended to be prototypes*.

Here's an example sentence:

> 
> The new album from the Ga Ga Dolls is nice to listen to, but terribly \_\_\_\_\_\_\_, since it borrows so many themes from the Blackberries album.
> 
> 
> 

Note: the word I'm looking for is not "plagiarism".