There is an upcoming concert in Sapporo at the Sapporo Concert Hall Kitara (in the small hall) where Marty Regan's "Lost Mountains, Quiet Valleys" / 深山、静寂な渓谷 will be performed.
菅原邦楽研究室札幌教室定期演奏会
Sugawara Hōgaku Laboratory - Sapporo Class(Branch)
poster(チラシ/散らし):
http://www1.nisiq.net/~naru8/www/images/sapporo2018-1.pdf
http://martyregan.com/posters/2018-06-17--JP-Sapporo-SapporoConcertHallKitara--SugawaraHougakuLab-29
The venue Kitara Hall in Sapporo has confirmed this at
http://www.kitara-sapporo.or.jp/event/dsp.php?num=2616
