ERIC JOHNSON & MIKE STERN Two guitar wizards on one album mean twice the musical magic By Jeff Tamarkin By any measure, Eric Johnson and Mike Stern are two of the most accomplished guitarists in recent history, but it’s doubtful anyone ever considered they’d make an album together. Stern, after all, is a renowned jazz artist, having had his initial breakthrough in the ’80s as a member of Miles Davis’ band. Johnson, on the other hand,...