>visitors will be charged a price to listen to the 128-minute, 31 song album on headphones provided by the venue. (Rigorous security checks will discourage the

>visitors will be charged a price to listen to the 128-minute, 31 song album on headphones provided by the venue. (Rigorous security checks will discourage the possibility of any illegal recording.) Could a powered recording device be made small enough to fit in the ear canal? Searching for "In-Ear Binaural microphones" finds some fairly small devices (they require external power and storage, though)