tran quang hai plays the jew’s harp to wish Happy Birthday to Prof Gilbert Rouget, 9 july 2016 19.04.2018 by Hai Tran Quang tran quang hai plays the jew’s harp to wish Happy Birthday to Prof Gilbert Rouget, 9 july 2016 QuangHai Tran Published on Jul 11, 2016 tran quang hai happy birthday to wish prof.gilbert rouget for his 100 years old jew’s harp