For his second album as Son Lux, New York’s Ryan Lott did a very un-Son Lux thing. He recorded We Are Rising in a month -- the shortest month of the year, actually -- while NPR tracked his every move. This, as opposed to the making of his lauded 2008 debut, At War With Walls And Mazes, which he slowly built in complete privacy over nearly three years. Of course, he didn’t plan it this way. He simply awoke one late January morning to find a message from All Songs Considered titled, “You busy?” The annual RPM Challenge, an international open call to create an album in 28 days, had been issued and Lott had been tapped. How could he say no? A delicate array of woodwinds, strings, glassy digitalia and synth throb that lifts Lott’s parched quaver into the clouds.