72305594 The multi-talented Lee Hong Gi of FT Island lent not just his acting skills but his vocal abilities as well to the film Passionate Goodbye—and the music video for "Jump," the song he sings for the film's OST, was just released. Take a look: Kdrama/Kpop crossover stars are always contributing to the soundtracks of films they're involved with. Who is your favorite star who has contributed to their own OST? Tell us in the comments below!