Keep users engaged longer
When users listen to music they enjoy while playing, their enjoyment level increases. Research shows that listening to music you like is pleasurable and makes activities seem more fun.
When you listen to music, a part of your brain called the nucleus accumbens activates. This triggers the release of the pleasure chemical dopamine, which lives in a part of your brain called the Ventral Tegmental Area. This section of the brain is called the Reward System and dopamine is strongly associated with it. Dopamine is the same chemical that gets released when you hear your favorite song or achieve a goal and the release of dopamine causes you to want more, more, more. So make users want your game more, more, more.
If you’re listening to new music while gaming, your brain may release too much dopamine. You’ll start to focus more on the music rather than the game. When you learn something new, dopamine levels increase and can cause you to lose focus and interest in an activity because it’s not as interesting, and therefore not as pleasurable, as the new song you just discovered.
Generate more revenue
Engagement isn't just important for metrics, research shows that engagement contributes majorly to in-app purchases: engaged users generate 1.7 times more revenue than normal users.
Get better reviews
From the perspective of evolution, there’s something deeper about why you feel pleasure when you listen to music. Neuroscientist and musician, Jamshed Bharucha, noted that music allows humans to connect, making us more likely to work together. Thus making users more likely to give positive feedback.