In this publicity photo provided by Sony, John Legend performs live at Sony 4k: Live Beyond Definition, in Los Angeles. Sony's first ultra-high-definition television, a massive 84-inch set that retails for $24,999.99, features nearly four times the resolution of typical high-definition TVs. (AP Photo/Sony, Joe Kohen)

Photo by: Joe Kohen

In this publicity photo provided by Sony, John Legend performs live at Sony 4k: Live Beyond Definition, in Los Angeles. Sony's first ultra-high-definition television, a massive 84-inch set that retails for $24,999.99, features nearly four times the resolution of typical high-definition TVs. (AP Photo/Sony, Joe Kohen)