Russian director Kirill Serebrennikov has been under house arrest in Moscow since August, but his fact-based tale of the coming of rock 'n' roll to Leningrad in the early 1980s, "Leto" (Summer), is competing in Cannes. It's a compelling account of romance and artistry in oppressive times, says film critic Lisa Nesselson. Meanwhile, "Sextape" is a slangy, irreverent look at sexual harassment in contemporary Strasbourg, where women may get taken advantage of but they also come out on top.