The most common and most likely answer to this crossword clue is the 7 letter word GANGSTA
I've seen this crossword clue in The Times
G
A
N
G
S
T
A
More clues leading to the result GANGSTA
- Style of rap starts to generate almost overwhelming dread
- In Georgia, dread such aggressive music
- Edinburgh’s goes towards, mostly, music
- Aggressive music links criminal groups and army
- Rap singer, good one but full of unease about our lot
- Modern musician‘s anxiety broaching grand finale in opera
- Modern music fills Georgia with feeling of unease
- At last approaching with trepidation before a thug
- In India, troop attracts tax! Criminal
- Dread donning grandpa’s coat hood in the US
Buddy explains!

The straight part
We know that "such aggressive music" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case such aggressive music = gangsta.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GANGSTA mean?
GANGSTA noun- A member of an urban criminal or street gang.
- Exhibiting the traits or demeanor associated with the traits or lifestyle of urban thugs or hustlers.