Answer:
It lacks parallel structure.
Explanation:
Parallel structure is when you write two or more ideas to show that they are connected, an example of parallel connection would be:
I like playing, running, and reading.
So you use the verbs in the same form in order to ennumerate, in the sentence in order for it to have parallel structure the words playing progressive rock need to be eliminated.
<em>"While Aynsley Dunbar has drummed in some of the greatest rock bands of all time, his style incorporates jazz, fusion, blues, and progressive rock."</em>