Ex-Oasis rocker Noel Gallagher turned up on Conan last night to perform “A.K.A. . . What A Life!,” a cut from his new album, Noel Gallagher’s High Flying Birds. Though the melody isn’t far off from what he was doing in the Oasis days, the song finds him revisiting the heavy beat of his collaborations with the Chemical Brothers back in the Nineties.