Song from crazy Rhode Island girl (8)
I believe the answer is:
Here is my best explanation:
'song' is the definition.
(madrigal is a kind of song)
'crazy rhode island girl' is the subsidiary indication.
'crazy' becomes 'mad' ('mad' can be a synonym of 'crazy').
'rhode island' becomes 'ri'.
'girl' becomes 'gal' ('gal' can be a synonym of 'girl'**).
'from' is the link.
(Other definitions for madrigal that I've seen before include "Old part song", "Drag Liam around to hear an unaccompanied song", "Without exaggeration", "Unaccompanied song in several parts", "Part song for unaccompanied voices", "Part-song", "Elaborate part song", "Elizabethan song", "air" and "Song".)