If you're a conspiracy theorist and feel that restaurants are avidly trying to control your mind, you might have a case for it.

There are McDonald's in Liverpool and Gloucester that believe they can control their drunk customers by playing Bach and Mozart in the restaurants.

The stores have been playing classical music late at night, and have noticed "more acceptable behavior," from its inebriated diners, according to Gloucestershire Live.

McDonald's told GC Live that they had tested this method before, finding that playing the music did affect the mood of their customers. Now these U.K. McDonald's locations are trying it out, in hopes of reducing incidents involving diners who might have had one too many drinks that night, and want to enjoy a late night Big Mac.

There was a study earlier this year that tested the effects of music on fast food customers, finding that playing Ed Sheeran's "Shape of You" actually helped increase sales by nine percent.

If restaurants are really using background music to control us, they should play heavy metal at Starbucks to see if it also helps wake us up.