Grammy-winning artists John Mayer and Keith Urban share the stage for an unforgettable night of music you won't want to miss. Watch as they collaborate on Urban's hits including "'Til Summer Comes Around," along with his feel-good single, "Sweet Thin... (more)g." The superstars will also team up on Mayer's singles, ""Perfectly Lonely" and "Gravity." And be sure to pay attention to the true talent of these musicians as they wail on their guitars.