Song from extremely enthusiastic Rhode Island girl (8)
I believe the answer is:
madrigal
'song' is the definition.
(I know that madrigal is a type of partsong)
'extremely enthusiastic rhode island girl' is the wordplay.
'extremely enthusiastic' becomes 'mad' (as in being mad about something).
'rhode island' becomes 'RI' (US postal abbreviation).
'girl' becomes 'gal'.
'mad'+'ri'+'gal'='MADRIGAL'
'from' is the link.
(Other definitions for madrigal that I've seen before include "Elaborate part song" , "Drag Liam around to hear an unaccompanied song" , "Part-song" , "Part song for unaccompanied voices" , "glee" .)