The most common and most likely answer to this crossword clue is the 9 letter word CROSSOVER
I've seen this crossword clue in The Guardian
C
R
O
S
S
O
V
E
R
Buddy explains!
The straight part
We know that "style of music" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case style of music = crossover.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 CROSSOVER mean?
CROSSOVER noun- A place where one thing crosses over another.
- The means by which the crossing is made.
- The result of the exchange of genetic material during meiosis.
- A blend of multiple styles of music or multiple film genres, intended to appeal to a wider audience.
- An automobile that is a mix of two kinds of automobiles, e.g. the Pontiac Torrent.
- A pair of switches and a short, diagonal length of track which together connect two parallel tracks and allow passage between them.
- A piece of fiction that borrows elements from two or more fictional universes.
- An athlete or swimmer who has competed in more than one of open water swimming, pool swimming, triathlon, and endurance sports.
- A crossover dribble.
- (of an Ethernet cable) Configured so that the transmit signals at one end are connected to the receive signals at the other.