細野晴臣
Sano took part in a special two-day concert commemorating Takashi Matsumoto's 45th anniversary as a lyricist held at the Tokyo International Forum on August 21–22, 2015. He performed lead vocals on "Haikara Hakuchi" with the surviving members of Happy End, Matsumoto, Haruomi Hosono and Shigeru Suzuki, in place of the deceased Eiichi Ohtaki.