1 Month of Service
Depends on the game really. Porn games don't really need background music but normal games do I'd say. For example in Hollow Knight it's nice that each area has a different music that adds to the general "feel" of the game. Spooky area? Let's use some spooky-ish music. And for various boss fights and phase transitions the music can be excellent, for example Ludwig, The Accursed & Holy Blade from Bloodborne.