Summer Festival Singing Frame Relay (Day 1) (1730)
https://www.youtube.com/playlist?list=PLINWvdAT6AfHTY2gBujBrxrr32DMTUlnD

1st Day of 3-day relay event with Haruka Mikoto as top batter. Makes sense as her friend in Tomose Meri co-host the event along with Hanazono Kagome.