The most common and most likely answer to this crossword clue is the 8 letter word MADRIGAL
I've seen this crossword clue in Independent
M
A
D
R
I
G
A
L
More clues leading to the result MADRIGAL
- Something akin to glee, seeing red port, large
- Crazy: equipment almost entirely for a song
- 16th-century music distracted capital over half a century
- Irate cook with extremely antisocial air
- Most of city girl’s old song
- Cross put against capital Latin vocal composition
- A mad girl breaks into song
- Capital and festivity both cut
- Capital left after mother died causes glee
- Cross European capital to pick up minstrel’s last song
Buddy explains!

The straight part
We know that "song" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case song = madrigal.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 MADRIGAL mean?
MADRIGAL noun- A song for a small number of unaccompanied voices; from 13th century Italy.
- A polyphonic song for about six voices, from 16th century Italy.
- A short poem, often pastoral, and suitable to be set to music.