Robin Trower & Jack Bruce – Once The Bird Has Flown Cover Jun 26, 2015 3EO Vol II - The Path, Cover Hip-Hop, Cover Jack, Cover Once, Cover Pop, Music from the motion picture, Robin Trower & Jack Bruce – Once The Bird Has Flown Cover. Like 0 Thanks! You've already liked this « Cream – White Room Cover Jack Bruce Eric Clapton Ginger Baker » Eric Clapton – a tribute to Jack Bruce (cover)