You should see some of the music I play.
The lyrics are literally: "60 Cycles... 59 Cycles...etc"
The song names are like "5-10-15hz" and "woofer-cooker", and various other bass-heavy Rap/Techno/Dub type stuff.
Not all the time, but at least once a day.
In the first 30 days I will have placed 100 hours of regular usage on them, and will have played almost every song I have through them.