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 "Part song for unaccompanied voices", "Drag Liam around to hear an unaccompanied song", "Unaccompanied song in several parts", "Old part song", "Without exaggeration", "Elizabethan song", "Elaborate part song", "Part-song" and "Unaccompanied harmonised part song".)