It’s just after sundown on a Tuesday in mid-October, and Carly Rae Jepsen is on the moon. Or, more accurately, she’s brought the moon to her adopted home of Los Angeles. The Canadian-born singer-songwriter is on stage at the Greek Theatre in the hills of Griffith Park as part of her So Nice tour. Tonight’s a decidedly lunar-themed affair, marked by a backdrop filled with space rocks and an anthropomorphic moon narrating from an LED screen.