masaka is a user on kamiyacho.net. You can follow them or interact with them if you have an account anywhere in the fediverse. If you don't, you can sign up here.
ヤマハのこれいいですね
定額プラン「アプリで楽譜見放題」 - ヤマハ「ぷりんと楽譜」 https://www.print-gakufu.com/subscription/