"EVERYDAY YEAH! Kataomoi" by Uemura Akari, Murota Mizuki, Okamura Rise, Yamagishi Riko, and Nomura Minami.
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"Semi" by Hamaura Ayano, Otsuka Aina, and Oda Sakura
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I was surprised by Mizuki (she does well) and Riko (she has a much deeper voice than expected).
Everyone does decently in "Semi". It fits Ayano's voice way more than Morning Musume's songs did in the audition footage.