I remember there was a Japanese men's team, and the lead singer was an uncle with glasses and a moustache. They even had a song on Mengniu Yogurt Music Billboard.

The Japanese men's band you mentioned may be the famous Japanese rock band Mr.Children, which consists of lead singer Sakurai Atsushi, guitarist Takayuki Yamada, keyboard player Hideki Suzuki and drummer Gao Qiao Yan Kuan. Their song style is mainly pop rock, and one of them, "Dear", has been on the music list of Mengniu Yogurt. Sakurai Atsushi is a member of this band. He usually wears glasses and has a moustache. He is the lead singer of the band and one of the main composers. Besides Honey, their other masterpieces include Mr. Child and Everything.