Josh Gallagher has spent the better part of his professional life making other people sound magnificent. Session men, touring musicians, ghost producers — these are the unsung architects of pop's cathedral, the ones who nail the flying buttresses into place while somebody else cuts the ribbon. With Magumbo, Gallagher has finally kicked the door open and walked through it himself, and if 'Say Yes To Heaven' is anything to judge by, he's been saving his best ideas for precisely this moment.