Moony features of musical girl I just met (5)
I believe the answer is:
maria
This clue is a triple definition!
'moony features' is the first definition.
(plural of 'mare' - type of plain found on the moon)
'of' acts as a link.
'musical' is the second definition.
(I've seen this before)
'girl i just met' is the third definition.
('I just met a girl named Maria' - West Side Story)
(Other definitions for maria that I've seen before include "Heroine of West Side Story" , "Lunar plains; girl's name" , "(Of plant) become limp" , "Girl's name; darker moon areas" , "Black --, -- Theresa" .)