US musician Moby’s new album – “Always Centered at Night” – dances, sings and meditates through a darkness that holds no horrors, but plenty of warmth. “On Air,” the first song from the artist’s 22nd studio album to be released on Friday, is an acoustic sunset: Moby doesn’t need much more than a piano, clapping hands and the velvety, floating melody of the singer Serpentwithfeet. Immediately afterwards, the number “Dark Days” picks up speed with the help of Lady Blackbird’s raspy soul voice. Producer, DJ and multi-instrumentalist Moby brought 13 singers into the studio for the 13 songs on the …