One of Japan’s most popular groups, Perfume became the first J-Pop act to ever take the stage at the Coachella Valley Music and Arts Festival with a performance last weekend. Formed in 2000, the electro-pop trio will do another set at the fest’s Gobi Tent on Sunday. That concert will conclude Perfume’s U.S. tour to promote their album, “Future Pop.” Nocchi (Ōmoto Ayano), Kashiyuka (Kashino Yuka) and A-chan (Nishiwaki Ayaka) made the most of their Coachella experience: The group caught a bit of Ariana Grande’s show and attended parties hosted by Interscope and Moschino. The experience, they said, was a dream.