alt-J | NPR MUSIC FRONT ROW

Nothing was ordinary about this alt-J show — not that anything is ever ordinary from the artful British band. But on Tuesday night at (Le) Poisson Rouge in New York City, alt-J would play its first concert in eight months: its first without departed friend and bassist/guitarist Gwil Sainsbury, its first with touring member Cameron Knight, and its first playing songs from the upcoming album This Is All Yours. The new songs have all the power of the old ones, flush with textured sounds from Gus Unger-Hamil