Logic puzzles

When I went down to take this photo they had not yet turned on the deafening hip hop music needed to entice the people of Tulum into a chemist. Undettered, I came back later to take a photo while the music was playing. Then I felt a bit stupid because the two photos would have been identical, what with sound being invisible and that.

Anyway, rest assured readers, the speakers in this photo really are pumping out rawkus crunking beats to people buying asprins, medicated trusses and antacids. You have not been misled at any point. Have a lovely 2010.