Lenses uses a range of wine glasses as "lenses" to amplify sound from small loudspeakers.
Three players each stand in front of a table of wine glasses. They each face a column on the opposite side of the room on which a set of wine glasses has been mounted, with speakers hanging over the rims. The glasses on the players' tables have been tuned with water to match the pitch of the glasses on the columns.
The players rub the rims of the glasses to sound them, following a grid-like score based on change ringing techniques. A contact microphone on the players' tables picks up the sound of their glasses and plays it out of the loudspeakers on the column. The glasses on the columns are encouraged to resonate in response to the sound from the loudspeakers.