A simpler way to listen to deriving the backing track

At your risk.


For example pulling the headphone plug a fraction of a millimeter from the iPad.


The voice, bass and everything else positioned at center disappeares.


What we now listen to is the L-R or R-L signal.


So we can hear in detail reverbs used in a production, backing vocals, strings etc.


For example on Skyfall - Adele Adkins, Paul Epworth


https://m.youtube.com/watch?v=DeumyOzKqgI#fauxfullscreen


We can hear the reverb of the vocal coming a fraction of a second latter, perhaps due to the acoustic path from loudspeaker to microphone inside the Abbey Road echo chamber or pre delay etc.