how is music able to be unevenly distributed through headphones?

Question

You know when you’re listening to layered music and you hear the drums on your left ear, and guitar in the right ear……seems like I don’t notice this when playing old time music, so I assume it’s something that has to be programed? in. Would this mean it takes longer to produce music today than before the widespread use of headphones?

In:

Answer 1

Stereo music has existed since the 1950s, and became increasingly common throughout the 60s and 70s. You don’t need headphones to hear stereo sound, you can hear it with a good speaker system.