Genre-hopping guitarist Mike Stern has worked with Miles Davis, Brecker Brothers, and Blood Sweat And Tears. He delivers a beautiful contemporary jazz fusion ballad in “What Might Have Been” (2002). Stern takes one of the guitar’s few weak links (the ability to strongly sustain a note without effects) and augments it by doubling it with the human voice, employing the enigmatic wordless vocals of Elisabeth Kontomanou.
The modulation is at 1:30, with a return to the original key at 2:05; after the guitar solo, the pattern repeats at 3:54 and 4:29.