Sound transfer... BY LASER : DIY Experiments #3 LASER light music wireless - YouTube
Amazon.com: AKEPO 13W Party Lights Stage Laser Light, LED Laser Effect and 52 LED Patterns (48+4 large) Sound Activated Stage Light Strobe Light for DJ Laser Light Show/Disco/Party/Festival Gift : Musical Instruments
Focused Sound 'Laser' for Crowd Control : NPR
9 Ways to Transmit Audio With a Laser Pen - wikiHow