By Mike Finkelstein
On Wednesday night UCLA Live presented John McLaughlin and the 4th Dimension to a hugely enthusiastic if not quite capacity crowd at Royce Hall. This was an opportunity to get a glimpse of a cornerstone figure in the jazz/rock/fusion field and, moreover, of a man who puts his music on a vigorous and composed high level at age 68. He is clearly still pushing himself musically as the rest of the band appeared no closer than about 30 years from his age. The show demonstrated just how easily four players, each with enough chops to fill the room by themselves, could streamline their approach for a wonderfully balanced ensemble sound.