The most common and most likely answer to this crossword clue is the 7 letter word KARAOKE
K
A
R
A
O
K
E
More clues leading to the result KARAOKE
- Entertainment said to carry satisfactory ending for the audience
- Kelvin, a debauched fellow, harbours love for pub entertainment
- Drunken rake should welcome a fine form of entertainment
- Form of entertainment, Korean primarily, a Korean almost ruined
- Knock back knockout toddy to get energy for public performance
- To facilitate such entertainment, a track finally gets mixed in Korea somehow
- What you get in some bars — strong Asian drink served up, all right?
- Knock back strong drink before giving assent for public performance
- OK, a rake is moved to get some backing
- A music entertainment system in Korea to dance having a cocktail
Buddy explains!

The straight part
We know that "A music entertainment system" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a music entertainment system = karaoke.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 KARAOKE mean?
KARAOKE noun- A form of entertainment popular in clubs, at parties, etc, in which individual members of the public sing along to pre-recorded instrumental versions of popular songs, the lyrics of which are displayed for the singer on a screen in time with the music.
- A karaoke session.
- To perform karaoke