seems like Oh-chan got a new job

but I don't understand yamakaze at all:

NHK Music competiton “let’s sing together” from April every Friday 9:58-10:00 Arashi mini show theme of Furusato Mini show “let’s sing together” process to create the symbol of the NHK music competition O-chan supervised will air

and since I can't find any information about Ohno on the NHK side I really don't understand if he's supervising the logo-creating or the mini-series on the competition...