I believe it's Jill Jones "Mia Bocca".

Under the Cherry Moon film score

1. Under the Cherry Moon Outro - Piano Instrumental (Intro Voice over)
2. An Honest Man - Piano Instrumental (Titles)
3. Christopher Tracy’s Parade (Nice)
4. Incidental Strings (Mirror, Mirror, 17 fold)
5. Incidental Sax & Strings (That Bela Lugosi look)
6. Incidental Sax & Strings (Bath phone call)
7. Do U Lie? (Mary’s party)
8. Planet Rock (Party Jam)
9. Incidental Drums (Christopher & Mary’s eyes meet)
10. Mia Bocca: Intro (Mary reappears)
11. New Position (Party Conga)
12. Happy Birthday (Jonathan calls)
13. Incidental Strings (Mary & Christopher)
14. Do U Lie? – Piano Instrumental (Mrs Wellington’s phone message)
15. Incidental Organ (Christopher & Mrs Wellington)
16. I Wonder U (Mary thinks of a retort)
17. Alexa De Paris (Dance on the veranda)
18. Do U Lie? – Instrumental (Isaac’s car at Mrs Wellington’s)
19. Incidental Drums & Bass (Mary wants to take boat out)
20. It’s A Wonderful Day – Instrumental (Butterscotch, Chocolate)
21. Incidental Chamber music (Restaurant)
22. Girls & Boys (making a scene at the restaurant)
23. I Wonder U (Mary in bed)
24. Love Or Money (I know, let’s spend it!)
25. Life Can Be So Nice (Waiting at the Hippodrome)
26. Junk music (Car race at the Hippodrome)
27. Under the Cherry Moon Istrumental (Christopher & Mary)
28. Venus De Milo (Phone booth)
29. Old Friends 4 Sale – Strings only (Tricky confronts Christopher)
30. Mountains – Part 2 (Let’s run away, for couple of hours)
31. Incidental Drums & Bass (Tricky says something he shouldn’t)
32. Incidental Strings (Mrs Wellington & Christopher)
33. Anotherloverholenyohead (Race to the airport)
34. Incidental Sax (Isaac gets to the plane)
35. Kiss (Define ‘Love’)
36. Incidental Sax (Isaac on the phone)
37. Kiss – Part 2 (Tricky oon the run)
38. Venus De Milo (Mary wakes up in the grotto)
39. Incidental Strings (Tricky fights back)
40. Sometimes It Snows In April (Miami)
41. Mountains (End Titles)