Ladytron’s last effort snuck up like a synthetic seduction, but they’re closing in on their first decade. Their programming has been mainlined by now, and powerful acts are hard to follow. But Velocifero walks the tightrope well, veering between the Gothic pound of “I’m Not Scared,” “Black Cat,” and “Ghosts” without falling into Halloween-y artifice. The electro-pop soul of “Runaway” manages to shine past its digital and analog housing, and Helen’s and Mira’s robotic vocals give “Deep Blue” the humanity it needs to evolve into a kick-ass dance tune, as well as being one of strangest odes to a computer ever composed. Yes, the pressure is on, but Ladytron’s space-aged hearts have a capable upgrade at the ready.