Music's Lessons(1995)

Roxanne, looking very young, is the niece of Beatrice Poggi who employs a young man to give her music lessons. Both Roxanne and Beatrice seduce the music teacher and Beatrice also has sex with an older man, who seems to wish to marry her, and with the butler. Roxanne and Beatrice compete for Hakan but eventually Roxanne decides to share. This results in a threesome which becomes a foursome when the butler joins in, including partner swapping and DP For Roxanne.